From 6a6d3eb24975fc7984dd1a80516aa94d5f68c700 Mon Sep 17 00:00:00 2001
From: Jose Andres Tejerina <andres.tejerina@exomindset.co>
Date: Tue, 19 May 2026 12:09:30 -0300
Subject: [PATCH 1/2] fix: reduces update logs that contain no actual changes

---
 app/Audit/AbstractAuditLogFormatter.php       |  53 ++++++++-
 app/Audit/AuditLogOtlpStrategy.php            |  11 +-
 ...AbstractAuditLogFormatterDateNoiseTest.php | 108 ++++++++++++++++++
 ...itLogFormatterHasMeaningfulChangesTest.php | 100 ++++++++++++++++
 ...uditLogOtlpStrategyNoOpSuppressionTest.php |  93 +++++++++++++++
 5 files changed, 362 insertions(+), 3 deletions(-)
 create mode 100644 tests/Unit/Audit/AbstractAuditLogFormatterDateNoiseTest.php
 create mode 100644 tests/Unit/Audit/AbstractAuditLogFormatterHasMeaningfulChangesTest.php
 create mode 100644 tests/Unit/Audit/AuditLogOtlpStrategyNoOpSuppressionTest.php

diff --git a/app/Audit/AbstractAuditLogFormatter.php b/app/Audit/AbstractAuditLogFormatter.php
index 005d34575..86e88d0a9 100644
--- a/app/Audit/AbstractAuditLogFormatter.php
+++ b/app/Audit/AbstractAuditLogFormatter.php
@@ -22,6 +22,7 @@ abstract class AbstractAuditLogFormatter implements IAuditLogFormatter
 {
     protected ?AuditContext $ctx = null;
     protected string $event_type;
+    public const NO_CHANGES_REGISTERED_MESSAGE = 'properties without changes registered';
 
     public function __construct(string $event_type)
     {
@@ -178,21 +179,71 @@ protected function buildChangeDetails(array $change_set): string
         }
 
         if (empty($changed_fields)) {
-            return 'properties without changes registered';
+            return self::NO_CHANGES_REGISTERED_MESSAGE;
         }
 
         $fields_summary = count($changed_fields) . ' field(s) modified: ';
         return $fields_summary . implode(' | ', $changed_fields);
     }
 
+
+    final public function hasMeaningfulChanges(array $change_set): bool
+    {
+        $ignored_fields = $this->getIgnoredFields();
+
+        foreach ($change_set as $prop_name => $change_values) {
+            if (in_array($prop_name, $ignored_fields)) {
+                continue;
+            }
+
+            $old_value = $change_values[0] ?? null;
+            $new_value = $change_values[1] ?? null;
+
+            if ($this->formatFieldChange($prop_name, $old_value, $new_value) !== null) {
+                return true;
+            }
+        }
+
+        return false;
+    }
+
     protected function formatFieldChange(string $prop_name, $old_value, $new_value): ?string
     {
+        if ($this->valuesAreEffectivelyEqual($old_value, $new_value)) {
+            return null;
+        }
+
         $old_display = $this->formatChangeValue($old_value);
         $new_display = $this->formatChangeValue($new_value);
 
         return sprintf("Property \"%s\" has changed from \"%s\" to \"%s\"", $prop_name, $old_display, $new_display);
     }
 
+    protected function valuesAreEffectivelyEqual($old_value, $new_value): bool
+    {
+        if ($old_value === $new_value) {
+            return true;
+        }
+
+        if ($old_value instanceof \DateTimeInterface && $new_value instanceof \DateTimeInterface) {
+            if ($old_value->getTimestamp() === $new_value->getTimestamp()) {
+                return true;
+            }
+
+            try {
+                return $old_value->format('U.u') === $new_value->format('U.u');
+            } catch (\Throwable $e) {
+                return false;
+            }
+        }
+
+        if ((is_scalar($old_value) || is_null($old_value)) && (is_scalar($new_value) || is_null($new_value))) {
+            return $this->formatChangeValue($old_value) === $this->formatChangeValue($new_value);
+        }
+
+        return false;
+    }
+
     /**
      * Format detailed message for many-to-many collection changes
      */
diff --git a/app/Audit/AuditLogOtlpStrategy.php b/app/Audit/AuditLogOtlpStrategy.php
index 1da61a7d8..757994dab 100644
--- a/app/Audit/AuditLogOtlpStrategy.php
+++ b/app/Audit/AuditLogOtlpStrategy.php
@@ -50,7 +50,7 @@ public function audit($subject, array $change_set, string $event_type,  AuditCon
             return;
         }
             Log::debug("AuditLogOtlpStrategy::audit", ['subject' => $subject, 'change_set' => $change_set, 'event_type' => $event_type]);
-        try {
+            try {
             $entity = $this->resolveAuditableEntity($subject);
             if (is_null($entity)) {
                 Log::warning("AuditLogOtlpStrategy::audit subject not found");
@@ -62,6 +62,13 @@ public function audit($subject, array $change_set, string $event_type,  AuditCon
                 Log::warning("AuditLogOtlpStrategy::audit formatter not found");
                 return;
             }
+            if ($event_type === IAuditStrategy::EVENT_ENTITY_UPDATE
+                && !$formatter->hasMeaningfulChanges($change_set)) {
+                Log::debug("AuditLogOtlpStrategy::audit skipping no-op entity update", [
+                    'subject_class' => is_object($subject) ? get_class($subject) : gettype($subject),
+                ]);
+                return;
+            }
             $description = $formatter->format($subject, $change_set);
             if(is_null($description)){
                 Log::warning("AuditLogOtlpStrategy::audit description is empty");
@@ -76,7 +83,7 @@ public function audit($subject, array $change_set, string $event_type,  AuditCon
                 job: $job,
             );
             Log::debug("AuditLogOtlpStrategy::audit entry sent to OTEL", ["user_id" => $ctx->userId, "user_email" => $ctx->userEmail]);
-
+         
         } catch (\Exception $ex) {
             Log::error('OTEL audit logging error: ' . $ex->getMessage(), [
                 'exception' => $ex,
diff --git a/tests/Unit/Audit/AbstractAuditLogFormatterDateNoiseTest.php b/tests/Unit/Audit/AbstractAuditLogFormatterDateNoiseTest.php
new file mode 100644
index 000000000..4b5a3ee6a
--- /dev/null
+++ b/tests/Unit/Audit/AbstractAuditLogFormatterDateNoiseTest.php
@@ -0,0 +1,108 @@
+<?php
+
+namespace Tests\Unit\Audit;
+
+/**
+ * Copyright 2026 OpenStack Foundation
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ **/
+
+use App\Audit\AbstractAuditLogFormatter;
+use App\Audit\Interfaces\IAuditStrategy;
+use DateTime;
+use DateTimeZone;
+use Tests\TestCase;
+
+final class AbstractAuditLogFormatterDateNoiseTest extends TestCase
+{
+    public function testBuildChangeDetailsIgnoresDateTimeSameSecondNoise(): void
+    {
+        $formatter = new ExposingAuditFormatter(IAuditStrategy::EVENT_ENTITY_UPDATE);
+
+        $oldUtc = new DateTime('2026-01-02 03:04:05', new DateTimeZone('UTC'));
+        $newLocalSameSecond = new DateTime('2026-01-02 00:04:05', new DateTimeZone('America/Argentina/Buenos_Aires'));
+
+        $details = $formatter->publicBuildChangeDetails([
+            'submission_begin_date' => [$oldUtc, $newLocalSameSecond],
+        ]);
+
+        $this->assertSame('properties without changes registered', $details);
+        $this->assertFalse($formatter->hasMeaningfulChanges([
+            'submission_begin_date' => [$oldUtc, $newLocalSameSecond],
+        ]));
+    }
+
+    public function testBuildChangeDetailsIgnoresMultipleDateFieldsWithSameInstant(): void
+    {
+        $formatter = new ExposingAuditFormatter(IAuditStrategy::EVENT_ENTITY_UPDATE);
+
+        $old = new DateTime('2025-07-02 07:00:00', new DateTimeZone('UTC'));
+        $newSame = new DateTime('2025-07-02 07:00:00', new DateTimeZone('UTC'));
+
+        $details = $formatter->publicBuildChangeDetails([
+            'submission_begin_date' => [$old, $newSame],
+            'submission_end_date' => [$old, $newSame],
+            'selection_begin_date' => [$old, $newSame],
+            'selection_end_date' => [$old, $newSame],
+        ]);
+
+        $this->assertSame('properties without changes registered', $details);
+    }
+
+    public function testBuildChangeDetailsStillShowsRealDateTimeChange(): void
+    {
+        $formatter = new ExposingAuditFormatter(IAuditStrategy::EVENT_ENTITY_UPDATE);
+
+        $old = new DateTime('2026-01-02 03:04:05', new DateTimeZone('UTC'));
+        $new = new DateTime('2026-01-02 03:04:06', new DateTimeZone('UTC'));
+
+        $details = $formatter->publicBuildChangeDetails([
+            'submission_begin_date' => [$old, $new],
+        ]);
+
+        $this->assertStringContainsString('submission_begin_date', $details);
+        $this->assertStringContainsString('03:04:05', $details);
+        $this->assertStringContainsString('03:04:06', $details);
+        $this->assertTrue($formatter->hasMeaningfulChanges([
+            'submission_begin_date' => [$old, $new],
+        ]));
+    }
+
+    public function testBuildChangeDetailsKeepsOtherNonDateChanges(): void
+    {
+        $formatter = new ExposingAuditFormatter(IAuditStrategy::EVENT_ENTITY_UPDATE);
+
+        $oldUtc = new DateTime('2026-01-02 03:04:05', new DateTimeZone('UTC'));
+        $newLocalSameSecond = new DateTime('2026-01-02 00:04:05', new DateTimeZone('America/Argentina/Buenos_Aires'));
+
+        $details = $formatter->publicBuildChangeDetails([
+            'submission_begin_date' => [$oldUtc, $newLocalSameSecond],
+            'name' => ['Old', 'New'],
+        ]);
+
+        $this->assertStringContainsString('1 field(s) modified', $details);
+        $this->assertStringContainsString('Property "name" has changed', $details);
+        $this->assertStringNotContainsString('submission_begin_date', $details);
+    }
+}
+
+final class ExposingAuditFormatter extends AbstractAuditLogFormatter
+{
+    public function publicBuildChangeDetails(array $change_set): string
+    {
+        return $this->buildChangeDetails($change_set);
+    }
+
+    public function format(mixed $subject, array $change_set): ?string
+    {
+        return null;
+    }
+}
diff --git a/tests/Unit/Audit/AbstractAuditLogFormatterHasMeaningfulChangesTest.php b/tests/Unit/Audit/AbstractAuditLogFormatterHasMeaningfulChangesTest.php
new file mode 100644
index 000000000..a8e5e39fb
--- /dev/null
+++ b/tests/Unit/Audit/AbstractAuditLogFormatterHasMeaningfulChangesTest.php
@@ -0,0 +1,100 @@
+<?php
+
+namespace Tests\Unit\Audit;
+
+/**
+ * Copyright 2026 OpenStack Foundation
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ **/
+
+use App\Audit\AbstractAuditLogFormatter;
+use App\Audit\Interfaces\IAuditStrategy;
+use DateTimeImmutable;
+use DateTimeZone;
+use Tests\TestCase;
+
+final class AbstractAuditLogFormatterHasMeaningfulChangesTest extends TestCase
+{
+    /**
+     * @dataProvider provideNoOpChangeSets
+     */
+    public function testHasMeaningfulChangesReturnsFalseForNoOps(array $changeSet): void
+    {
+        $formatter = new ExposingMeaningfulAuditFormatter(IAuditStrategy::EVENT_ENTITY_UPDATE);
+        $this->assertFalse($formatter->hasMeaningfulChanges($changeSet));
+        $this->assertSame(AbstractAuditLogFormatter::NO_CHANGES_REGISTERED_MESSAGE, $formatter->publicBuildChangeDetails($changeSet));
+    }
+
+    /**
+     * @dataProvider provideMeaningfulChangeSets
+     */
+    public function testHasMeaningfulChangesReturnsTrueForRealChanges(array $changeSet): void
+    {
+        $formatter = new ExposingMeaningfulAuditFormatter(IAuditStrategy::EVENT_ENTITY_UPDATE);
+        $this->assertTrue($formatter->hasMeaningfulChanges($changeSet));
+        $this->assertNotSame(AbstractAuditLogFormatter::NO_CHANGES_REGISTERED_MESSAGE, $formatter->publicBuildChangeDetails($changeSet));
+    }
+
+    public static function provideNoOpChangeSets(): array
+    {
+        $dtUtc = new DateTimeImmutable('2026-01-02 03:04:05', new DateTimeZone('UTC'));
+        $dtSameInstantOtherTz = new DateTimeImmutable('2026-01-02 00:04:05', new DateTimeZone('America/Argentina/Buenos_Aires'));
+
+        return [
+            'same-string' => [[
+                'name' => ['abc', 'abc'],
+            ]],
+            'same-bool' => [[
+                'is_enabled' => [true, true],
+            ]],
+            'same-null' => [[
+                'submission_lock_down_presentation_status_date' => [null, null],
+            ]],
+            'datetime-same-instant-different-tz' => [[
+                'submission_begin_date' => [$dtUtc, $dtSameInstantOtherTz],
+            ]],
+        ];
+    }
+
+    public static function provideMeaningfulChangeSets(): array
+    {
+        $dt1 = new DateTimeImmutable('2026-01-02 03:04:05', new DateTimeZone('UTC'));
+        $dt2 = new DateTimeImmutable('2026-01-02 03:04:06', new DateTimeZone('UTC'));
+
+        return [
+            'string-changed' => [[
+                'name' => ['abc', 'def'],
+            ]],
+            'bool-changed' => [[
+                'is_hidden' => [false, true],
+            ]],
+            'null-to-value' => [[
+                'max_submission_allowed_per_user' => [null, 3],
+            ]],
+            'datetime-changed' => [[
+                'submission_begin_date' => [$dt1, $dt2],
+            ]],
+        ];
+    }
+}
+
+final class ExposingMeaningfulAuditFormatter extends AbstractAuditLogFormatter
+{
+    public function publicBuildChangeDetails(array $change_set): string
+    {
+        return $this->buildChangeDetails($change_set);
+    }
+
+    public function format(mixed $subject, array $change_set): ?string
+    {
+        return null;
+    }
+}
diff --git a/tests/Unit/Audit/AuditLogOtlpStrategyNoOpSuppressionTest.php b/tests/Unit/Audit/AuditLogOtlpStrategyNoOpSuppressionTest.php
new file mode 100644
index 000000000..578466c95
--- /dev/null
+++ b/tests/Unit/Audit/AuditLogOtlpStrategyNoOpSuppressionTest.php
@@ -0,0 +1,93 @@
+<?php
+
+namespace Tests\Unit\Audit;
+
+/**
+ * Copyright 2026 OpenStack Foundation
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ **/
+
+use App\Audit\AbstractAuditLogFormatter;
+use App\Audit\AuditContext;
+use App\Audit\AuditLogOtlpStrategy;
+use App\Audit\IAuditLogFormatterFactory;
+use App\Audit\Interfaces\IAuditStrategy;
+use App\Jobs\EmitAuditLogJob;
+use DateTimeImmutable;
+use DateTimeZone;
+use Illuminate\Support\Facades\Bus;
+use Illuminate\Support\Facades\Config;
+use Tests\TestCase;
+
+final class AuditLogOtlpStrategyNoOpSuppressionTest extends TestCase
+{
+    public function testAuditSkipsDispatchWhenNoMeaningfulChanges(): void
+    {
+        Bus::fake();
+        Config::set('opentelemetry.enabled', true);
+
+        $formatterFactory = new class implements IAuditLogFormatterFactory {
+            public function make(AuditContext $ctx, mixed $subject, string $event_type): ?\App\Audit\IAuditLogFormatter
+            {
+                return new class($event_type) extends AbstractAuditLogFormatter {
+                    public function format(mixed $subject, array $change_set): ?string
+                    {
+                        return 'should-not-be-used';
+                    }
+                };
+            }
+        };
+
+        $strategy = new AuditLogOtlpStrategy($formatterFactory);
+
+        $dtUtc = new DateTimeImmutable('2026-01-02 03:04:05', new DateTimeZone('UTC'));
+        $dtSameInstantOtherTz = new DateTimeImmutable('2026-01-02 00:04:05', new DateTimeZone('America/Argentina/Buenos_Aires'));
+
+        $strategy->audit(
+            subject: (object) ['id' => 1],
+            change_set: ['submission_begin_date' => [$dtUtc, $dtSameInstantOtherTz]],
+            event_type: IAuditStrategy::EVENT_ENTITY_UPDATE,
+            ctx: new AuditContext()
+        );
+
+        Bus::assertNotDispatched(EmitAuditLogJob::class);
+    }
+
+    public function testAuditDispatchesWhenMeaningfulChangesExist(): void
+    {
+        Bus::fake();
+        Config::set('opentelemetry.enabled', true);
+
+        $formatterFactory = new class implements IAuditLogFormatterFactory {
+            public function make(AuditContext $ctx, mixed $subject, string $event_type): ?\App\Audit\IAuditLogFormatter
+            {
+                return new class($event_type) extends AbstractAuditLogFormatter {
+                    public function format(mixed $subject, array $change_set): ?string
+                    {
+                        return 'ok';
+                    }
+                };
+            }
+        };
+
+        $strategy = new AuditLogOtlpStrategy($formatterFactory);
+
+        $strategy->audit(
+            subject: (object) ['id' => 1],
+            change_set: ['name' => ['a', 'b']],
+            event_type: IAuditStrategy::EVENT_ENTITY_UPDATE,
+            ctx: new AuditContext()
+        );
+
+        Bus::assertDispatched(EmitAuditLogJob::class);
+    }
+}
+

From aabffc55a8880b0dfba51b6a03d77f05acd92246 Mon Sep 17 00:00:00 2001
From: Jose Andres Tejerina <andres.tejerina@exomindset.co>
Date: Tue, 26 May 2026 18:05:14 -0300
Subject: [PATCH 2/2] fix: formatters now return a null description if there
 are no actual changes

---
 app/Audit/AbstractAuditLogFormatter.php       |  25 +---
 app/Audit/AuditLogOtlpStrategy.php            |   7 --
 .../AffiliationAuditLogFormatter.php          |   3 +
 ...PlanExtraQuestionTypeAuditLogFormatter.php |   3 +
 .../CompanyAuditLogFormatter.php              |   3 +
 ...xtraQuestionTypeValueAuditLogFormatter.php |   1 +
 .../FeaturedSpeakerAuditLogFormatter.php      |   3 +
 .../FileAuditLogFormatter.php                 |   3 +
 ...istrationDiscountCodeAuditLogFormatter.php |   3 +
 ...sentationAttendeeVoteAuditLogFormatter.php |   3 +
 .../PresentationCategoryAuditLogFormatter.php |   3 +
 ...entationCategoryGroupAuditLogFormatter.php |   3 +
 .../BasePresentationAuditLogFormatter.php     |   2 +-
 ...resentationActionTypeAuditLogFormatter.php |   3 +
 .../PresentationEventApiAuditLogFormatter.php |   8 +-
 .../PresentationLinkAuditLogFormatter.php     |   3 +
 ...esentationMediaUploadAuditLogFormatter.php |   3 +
 .../PresentationSlideAuditLogFormatter.php    |   3 +
 .../PresentationSpeakerAuditLogFormatter.php  |   3 +
 ...ssistanceConfirmationAuditLogFormatter.php |   3 +
 ...resentationSubmissionAuditLogFormatter.php |   8 +-
 ...nTrackChairRatingTypeAuditLogFormatter.php |   3 +
 ...onTrackChairScoreTypeAuditLogFormatter.php |   3 +
 ...ntationUserSubmissionAuditLogFormatter.php |   3 +
 .../PresentationVideoAuditLogFormatter.php    |   3 +
 .../PresentationTypeAuditLogFormatter.php     |   3 +
 .../RSVPAuditLogFormatter.php                 |   3 +
 .../RSVPInvitationAuditLogFormatter.php       |   3 +
 .../RSVPQuestionTemplateAuditLogFormatter.php |   3 +
 .../RSVPTemplateAuditLogFormatter.php         |   3 +
 ...dSummitLocationBannerAuditLogFormatter.php |   3 +
 ...ePresentationQuestionAuditLogFormatter.php |   3 +
 ...dPresentationQuestionAuditLogFormatter.php |   3 +
 .../SelectionPlanAuditLogFormatter.php        |   3 +
 .../SpeakerAssistanceAuditLogFormatter.php    |   3 +
 ...erRegistrationRequestAuditLogFormatter.php |   3 +
 .../SponsorAdAuditLogFormatter.php            |   3 +
 .../SponsorAuditLogFormatter.php              |   3 +
 .../SponsorBadgeScanAuditLogFormatter.php     |   3 +
 ...anExtraQuestionAnswerAuditLogFormatter.php |   3 +
 .../SponsorMaterialAuditLogFormatter.php      |   3 +
 .../SponsorSocialNetworkAuditLogFormatter.php |   3 +
 ...istrationDiscountCodeAuditLogFormatter.php |   3 +
 ...RegistrationPromoCodeAuditLogFormatter.php |   3 +
 .../SponsorUserInfoGrantAuditLogFormatter.php |   3 +
 .../SubmissionInvitationAuditLogFormatter.php |   3 +
 ...SummitAccessLevelTypeAuditLogFormatter.php |   3 +
 .../SummitAirportAuditLogFormatter.php        |   3 +
 .../SummitAttendeeAuditLogFormatter.php       |   3 +
 .../SummitAttendeeBadgeAuditLogFormatter.php  |   3 +
 .../SummitAttendeeNoteAuditLogFormatter.php   |   3 +
 .../SummitAttendeeTicketAuditLogFormatter.php |   3 +
 ...mmitAttendeeTicketTaxAuditLogFormatter.php |   3 +
 .../SummitAuditLogFormatter.php               |   3 +
 ...ummitBadgeFeatureTypeAuditLogFormatter.php |   3 +
 .../SummitBadgeTypeAuditLogFormatter.php      |   3 +
 .../SummitBadgeViewTypeAuditLogFormatter.php  |   3 +
 ...enueRoomAttributeTypeAuditLogFormatter.php |   3 +
 ...nueRoomAttributeValueAuditLogFormatter.php |   3 +
 ...mmitBookableVenueRoomAuditLogFormatter.php |   3 +
 ...EventAttendanceMetricAuditLogFormatter.php |   3 +
 .../SummitEventAuditLogFormatter.php          |   3 +
 .../SummitEventTypeAuditLogFormatter.php      |   3 +
 ...ummitExternalLocationAuditLogFormatter.php |   3 +
 ...mitGeoLocatedLocationAuditLogFormatter.php |   3 +
 .../SummitHotelAuditLogFormatter.php          |   3 +
 .../SummitLocationBannerAuditLogFormatter.php |   3 +
 .../SummitLocationImageAuditLogFormatter.php  |   3 +
 ...SummitMediaUploadTypeAuditLogFormatter.php |   3 +
 .../SummitMemberScheduleAuditLogFormatter.php |   3 +
 .../SummitMetricAuditLogFormatter.php         |   3 +
 .../SummitOrderAuditLogFormatter.php          |   3 +
 ...rderExtraQuestionTypeAuditLogFormatter.php |   3 +
 ...itPresentationCommentAuditLogFormatter.php |   3 +
 ...heduleAllowedLocationAuditLogFormatter.php |   3 +
 ...ummitRefundPolicyTypeAuditLogFormatter.php |   3 +
 ...istrationFeedMetadataAuditLogFormatter.php |   3 +
 ...tSelectedPresentationAuditLogFormatter.php |   3 +
 ...ectedPresentationListAuditLogFormatter.php |   3 +
 ...nsorExtraQuestionTypeAuditLogFormatter.php |   3 +
 ...ummitSponsorshipAddOnAuditLogFormatter.php |   3 +
 .../SummitSponsorshipAuditLogFormatter.php    |   3 +
 .../SummitTaxTypeAuditLogFormatter.php        |   3 +
 .../SummitTicketTypeAuditLogFormatter.php     |   3 +
 .../SummitTrackChairAuditLogFormatter.php     |   3 +
 .../SummitVenueAuditLogFormatter.php          |   3 +
 .../SummitVenueFloorAuditLogFormatter.php     |   3 +
 .../SummitVenueRoomAuditLogFormatter.php      |   3 +
 ...QuestionTypeValueAuditLogFormatterTest.php |   5 +-
 .../Formatters/FileAuditLogFormatterTest.php  |   5 +-
 ...ationDiscountCodeAuditLogFormatterTest.php |   4 +-
 ...mitLocationBannerAuditLogFormatterTest.php |   5 +-
 .../Formatters/SponsorAdFormatterTest.php     |   5 +-
 ...geScanExtraQuestionAnswerFormatterTest.php |   5 +-
 .../SponsorBadgeScanFormatterTest.php         |   5 +-
 .../Formatters/SponsorFormatterTest.php       |   5 +-
 .../SponsorMaterialFormatterTest.php          |   5 +-
 .../SponsorSocialNetworkFormatterTest.php     |   5 +-
 ...tRegistrationDiscountCodeFormatterTest.php |   5 +-
 ...mmitRegistrationPromoCodeFormatterTest.php |   5 +-
 .../SponsorUserInfoGrantFormatterTest.php     |   5 +-
 ...itAccessLevelTypeAuditLogFormatterTest.php |   6 +-
 ...mmitAttendeeBadgeAuditLogFormatterTest.php |   5 +-
 ...ummitAttendeeNoteAuditLogFormatterTest.php |   5 +-
 ...mitAttendeeTicketAuditLogFormatterTest.php |   5 +-
 ...tBadgeFeatureTypeAuditLogFormatterTest.php |   6 +-
 .../SummitBadgeTypeAuditLogFormatterTest.php  |   6 +-
 ...mmitBadgeViewTypeAuditLogFormatterTest.php |   6 +-
 ...BookableVenueRoomAuditLogFormatterTest.php |   5 +-
 .../SummitEventTypeFormatterTest.php          |   5 +-
 ...mitLocationBannerAuditLogFormatterTest.php |   5 +-
 ...mmitLocationImageAuditLogFormatterTest.php |   5 +-
 .../SummitOrderAuditLogFormatterTest.php      |   5 +-
 ...ExtraQuestionTypeAuditLogFormatterTest.php |   5 +-
 ...tRefundPolicyTypeAuditLogFormatterTest.php |   4 +-
 ...ExtraQuestionTypeAuditLogFormatterTest.php |   5 +-
 .../SummitTaxTypeAuditLogFormatterTest.php    |   4 +-
 .../SummitTicketTypeAuditLogFormatterTest.php |   4 +-
 .../SummitVenueFloorAuditLogFormatterTest.php |   5 +-
 ...AbstractAuditLogFormatterDateNoiseTest.php | 108 ------------------
 ...itLogFormatterHasMeaningfulChangesTest.php | 100 ----------------
 ...uditLogOtlpStrategyNoOpSuppressionTest.php |  93 ---------------
 ...ExtraQuestionTypeAuditLogFormatterTest.php |   8 +-
 123 files changed, 326 insertions(+), 435 deletions(-)
 delete mode 100644 tests/Unit/Audit/AbstractAuditLogFormatterDateNoiseTest.php
 delete mode 100644 tests/Unit/Audit/AbstractAuditLogFormatterHasMeaningfulChangesTest.php
 delete mode 100644 tests/Unit/Audit/AuditLogOtlpStrategyNoOpSuppressionTest.php

diff --git a/app/Audit/AbstractAuditLogFormatter.php b/app/Audit/AbstractAuditLogFormatter.php
index 86e88d0a9..a7620692a 100644
--- a/app/Audit/AbstractAuditLogFormatter.php
+++ b/app/Audit/AbstractAuditLogFormatter.php
@@ -22,7 +22,6 @@ abstract class AbstractAuditLogFormatter implements IAuditLogFormatter
 {
     protected ?AuditContext $ctx = null;
     protected string $event_type;
-    public const NO_CHANGES_REGISTERED_MESSAGE = 'properties without changes registered';
 
     public function __construct(string $event_type)
     {
@@ -159,7 +158,7 @@ protected function formatChangeValue($value): string
     }
 
 
-    protected function buildChangeDetails(array $change_set): string
+    protected function buildChangeDetails(array $change_set): ?string
     {
         $changed_fields = [];
         $ignored_fields = $this->getIgnoredFields();
@@ -179,7 +178,7 @@ protected function buildChangeDetails(array $change_set): string
         }
 
         if (empty($changed_fields)) {
-            return self::NO_CHANGES_REGISTERED_MESSAGE;
+            return null;
         }
 
         $fields_summary = count($changed_fields) . ' field(s) modified: ';
@@ -187,26 +186,6 @@ protected function buildChangeDetails(array $change_set): string
     }
 
 
-    final public function hasMeaningfulChanges(array $change_set): bool
-    {
-        $ignored_fields = $this->getIgnoredFields();
-
-        foreach ($change_set as $prop_name => $change_values) {
-            if (in_array($prop_name, $ignored_fields)) {
-                continue;
-            }
-
-            $old_value = $change_values[0] ?? null;
-            $new_value = $change_values[1] ?? null;
-
-            if ($this->formatFieldChange($prop_name, $old_value, $new_value) !== null) {
-                return true;
-            }
-        }
-
-        return false;
-    }
-
     protected function formatFieldChange(string $prop_name, $old_value, $new_value): ?string
     {
         if ($this->valuesAreEffectivelyEqual($old_value, $new_value)) {
diff --git a/app/Audit/AuditLogOtlpStrategy.php b/app/Audit/AuditLogOtlpStrategy.php
index 757994dab..0a2f3da3c 100644
--- a/app/Audit/AuditLogOtlpStrategy.php
+++ b/app/Audit/AuditLogOtlpStrategy.php
@@ -62,13 +62,6 @@ public function audit($subject, array $change_set, string $event_type,  AuditCon
                 Log::warning("AuditLogOtlpStrategy::audit formatter not found");
                 return;
             }
-            if ($event_type === IAuditStrategy::EVENT_ENTITY_UPDATE
-                && !$formatter->hasMeaningfulChanges($change_set)) {
-                Log::debug("AuditLogOtlpStrategy::audit skipping no-op entity update", [
-                    'subject_class' => is_object($subject) ? get_class($subject) : gettype($subject),
-                ]);
-                return;
-            }
             $description = $formatter->format($subject, $change_set);
             if(is_null($description)){
                 Log::warning("AuditLogOtlpStrategy::audit description is empty");
diff --git a/app/Audit/ConcreteFormatters/AffiliationAuditLogFormatter.php b/app/Audit/ConcreteFormatters/AffiliationAuditLogFormatter.php
index bfc8f5144..f2fe7aadd 100644
--- a/app/Audit/ConcreteFormatters/AffiliationAuditLogFormatter.php
+++ b/app/Audit/ConcreteFormatters/AffiliationAuditLogFormatter.php
@@ -40,6 +40,9 @@ public function format($subject, array $change_set): ?string
 
                 case IAuditStrategy::EVENT_ENTITY_UPDATE:
                     $details = $this->buildChangeDetails($change_set);
+                    if ($details === null) {
+                        return null;
+                    }
                     return sprintf("Affiliation (%s) for '%s' (%s) updated: %s by user %s", $id, $owner_name, $job_title, $details, $this->getUserInfo());
 
                 case IAuditStrategy::EVENT_ENTITY_DELETION:
diff --git a/app/Audit/ConcreteFormatters/AssignedSelectionPlanExtraQuestionTypeAuditLogFormatter.php b/app/Audit/ConcreteFormatters/AssignedSelectionPlanExtraQuestionTypeAuditLogFormatter.php
index 10d093106..54e8a0823 100644
--- a/app/Audit/ConcreteFormatters/AssignedSelectionPlanExtraQuestionTypeAuditLogFormatter.php
+++ b/app/Audit/ConcreteFormatters/AssignedSelectionPlanExtraQuestionTypeAuditLogFormatter.php
@@ -53,6 +53,9 @@ public function format($subject, array $change_set): ?string
                     $question_type = $subject->getQuestionType();
                     $question_label = $question_type ? ($question_type->getLabel() ?? 'Unknown Question') : 'Unknown Question';
                     $change_details = $this->buildChangeDetails($change_set);
+                    if ($change_details === null) {
+                        return null;
+                    }
                     return sprintf(
                         "Assigned Selection Plan Extra Question (%s) '%s' updated: %s by user %s",
                         $id,
diff --git a/app/Audit/ConcreteFormatters/CompanyAuditLogFormatter.php b/app/Audit/ConcreteFormatters/CompanyAuditLogFormatter.php
index 6491b16a3..be2fed56e 100644
--- a/app/Audit/ConcreteFormatters/CompanyAuditLogFormatter.php
+++ b/app/Audit/ConcreteFormatters/CompanyAuditLogFormatter.php
@@ -49,6 +49,9 @@ public function format($subject, array $change_set): ?string
 
                 case IAuditStrategy::EVENT_ENTITY_UPDATE:
                     $change_details = $this->buildChangeDetails($change_set);
+                    if ($change_details === null) {
+                        return null;
+                    }
                     return sprintf(
                         "Company '%s' (%d) updated: %s by user %s",
                         $name,
diff --git a/app/Audit/ConcreteFormatters/ExtraQuestionTypeValueAuditLogFormatter.php b/app/Audit/ConcreteFormatters/ExtraQuestionTypeValueAuditLogFormatter.php
index 20db9203a..905890de7 100644
--- a/app/Audit/ConcreteFormatters/ExtraQuestionTypeValueAuditLogFormatter.php
+++ b/app/Audit/ConcreteFormatters/ExtraQuestionTypeValueAuditLogFormatter.php
@@ -39,6 +39,7 @@ public function format($subject, array $change_set): ?string
                     return sprintf("Extra Question Value '%s' (%s) for Question '%s' created by user %s", $label, $id, $question_label, $this->getUserInfo());
                 case IAuditStrategy::EVENT_ENTITY_UPDATE:
                     $details = $this->buildChangeDetails($change_set);
+                    if ($details === null) return null;
                     return sprintf("Extra Question Value '%s' (%s) for Question '%s' updated: %s by user %s", $label, $id, $question_label, $details, $this->getUserInfo());
                 case IAuditStrategy::EVENT_ENTITY_DELETION:
                     return sprintf("Extra Question Value '%s' (%s) for Question '%s' deleted by user %s", $label, $id, $question_label, $this->getUserInfo());
diff --git a/app/Audit/ConcreteFormatters/FeaturedSpeakerAuditLogFormatter.php b/app/Audit/ConcreteFormatters/FeaturedSpeakerAuditLogFormatter.php
index e4c2fabbe..fecae227c 100644
--- a/app/Audit/ConcreteFormatters/FeaturedSpeakerAuditLogFormatter.php
+++ b/app/Audit/ConcreteFormatters/FeaturedSpeakerAuditLogFormatter.php
@@ -53,6 +53,9 @@ public function format($subject, array $change_set): ?string
 
                 case IAuditStrategy::EVENT_ENTITY_UPDATE:
                     $change_details = $this->buildChangeDetails($change_set);
+                    if ($change_details === null) {
+                        return null;
+                    }
                     return sprintf(
                         "Featured speaker '%s' (%s) updated: %s by user %s",
                         $speaker_name,
diff --git a/app/Audit/ConcreteFormatters/FileAuditLogFormatter.php b/app/Audit/ConcreteFormatters/FileAuditLogFormatter.php
index 18983e0b1..d769e924a 100644
--- a/app/Audit/ConcreteFormatters/FileAuditLogFormatter.php
+++ b/app/Audit/ConcreteFormatters/FileAuditLogFormatter.php
@@ -45,6 +45,9 @@ public function format($subject, array $change_set): ?string
 
                 case IAuditStrategy::EVENT_ENTITY_UPDATE:
                     $change_details = $this->buildChangeDetails($change_set);
+                    if ($change_details === null) {
+                        return null;
+                    }
                     return sprintf(
                         "File '%s' (%s) (%d) updated: %s by user %s",
                         $name,
diff --git a/app/Audit/ConcreteFormatters/PrePaidSummitRegistrationDiscountCodeAuditLogFormatter.php b/app/Audit/ConcreteFormatters/PrePaidSummitRegistrationDiscountCodeAuditLogFormatter.php
index 5a3d76ed9..a3eadb1c1 100644
--- a/app/Audit/ConcreteFormatters/PrePaidSummitRegistrationDiscountCodeAuditLogFormatter.php
+++ b/app/Audit/ConcreteFormatters/PrePaidSummitRegistrationDiscountCodeAuditLogFormatter.php
@@ -72,6 +72,9 @@ public function format($subject, array $change_set): ?string
 
                 case IAuditStrategy::EVENT_ENTITY_UPDATE:
                     $change_details = $this->buildChangeDetails($change_set);
+                    if ($change_details === null) {
+                        return null;
+                    }
                     return sprintf(
                         "Pre-Paid Discount Code '%s' (%d) for Summit '%s' updated: %s (current: %s) by user %s",
                         $code,
diff --git a/app/Audit/ConcreteFormatters/PresentationAttendeeVoteAuditLogFormatter.php b/app/Audit/ConcreteFormatters/PresentationAttendeeVoteAuditLogFormatter.php
index f38d67379..e0d00eb26 100644
--- a/app/Audit/ConcreteFormatters/PresentationAttendeeVoteAuditLogFormatter.php
+++ b/app/Audit/ConcreteFormatters/PresentationAttendeeVoteAuditLogFormatter.php
@@ -38,6 +38,9 @@ public function format($subject, array $change_set): ?string
                     return sprintf("Presentation Attendee Vote (%s) for '%s' created by user %s", $id, $title, $this->getUserInfo());
                 case IAuditStrategy::EVENT_ENTITY_UPDATE:
                     $details = $this->buildChangeDetails($change_set);
+                    if ($details === null) {
+                        return null;
+                    }
                     return sprintf("Presentation Attendee Vote (%s) for '%s' updated: %s by user %s", $id, $title, $details, $this->getUserInfo());
                 case IAuditStrategy::EVENT_ENTITY_DELETION:
                     return sprintf("Presentation Attendee Vote (%s) for '%s' deleted by user %s", $id, $title, $this->getUserInfo());
diff --git a/app/Audit/ConcreteFormatters/PresentationCategoryAuditLogFormatter.php b/app/Audit/ConcreteFormatters/PresentationCategoryAuditLogFormatter.php
index d161d51c5..c51a87ba5 100644
--- a/app/Audit/ConcreteFormatters/PresentationCategoryAuditLogFormatter.php
+++ b/app/Audit/ConcreteFormatters/PresentationCategoryAuditLogFormatter.php
@@ -48,6 +48,9 @@ public function format($subject, array $change_set): ?string
 
                 case IAuditStrategy::EVENT_ENTITY_UPDATE:
                     $change_details = $this->buildChangeDetails($change_set);
+                    if ($change_details === null) {
+                        return null;
+                    }
                     return sprintf(
                         "Presentation Category '%s' (%s) (%d) for Summit '%s' updated: %s by user %s",
                         $title,
diff --git a/app/Audit/ConcreteFormatters/PresentationCategoryGroupAuditLogFormatter.php b/app/Audit/ConcreteFormatters/PresentationCategoryGroupAuditLogFormatter.php
index 4ea4de910..c3cba8e25 100644
--- a/app/Audit/ConcreteFormatters/PresentationCategoryGroupAuditLogFormatter.php
+++ b/app/Audit/ConcreteFormatters/PresentationCategoryGroupAuditLogFormatter.php
@@ -50,6 +50,9 @@ public function format($subject, array $change_set): ?string
 
                 case IAuditStrategy::EVENT_ENTITY_UPDATE:
                     $change_details = $this->buildChangeDetails($change_set);
+                    if ($change_details === null) {
+                        return null;
+                    }
                     return sprintf(
                         "Track Group (PresentationCategoryGroup) '%s' (%s) for Summit '%s' updated: %s by user %s",
                         $name,
diff --git a/app/Audit/ConcreteFormatters/PresentationFormatters/BasePresentationAuditLogFormatter.php b/app/Audit/ConcreteFormatters/PresentationFormatters/BasePresentationAuditLogFormatter.php
index 2a388e326..0b5b25568 100644
--- a/app/Audit/ConcreteFormatters/PresentationFormatters/BasePresentationAuditLogFormatter.php
+++ b/app/Audit/ConcreteFormatters/PresentationFormatters/BasePresentationAuditLogFormatter.php
@@ -76,7 +76,7 @@ public function format(mixed $subject, array $change_set): ?string
 
     abstract protected function formatCreation(array $data): string;
 
-    abstract protected function formatUpdate(array $data, array $change_set): string;
+    abstract protected function formatUpdate(array $data, array $change_set): ?string;
 
     abstract protected function formatDeletion(array $data): string;
 }
diff --git a/app/Audit/ConcreteFormatters/PresentationFormatters/PresentationActionTypeAuditLogFormatter.php b/app/Audit/ConcreteFormatters/PresentationFormatters/PresentationActionTypeAuditLogFormatter.php
index 53d5933ae..a28d571e2 100644
--- a/app/Audit/ConcreteFormatters/PresentationFormatters/PresentationActionTypeAuditLogFormatter.php
+++ b/app/Audit/ConcreteFormatters/PresentationFormatters/PresentationActionTypeAuditLogFormatter.php
@@ -47,6 +47,9 @@ public function format($subject, array $change_set): ?string
 
                 case IAuditStrategy::EVENT_ENTITY_UPDATE:
                     $change_details = $this->buildChangeDetails($change_set);
+                    if ($change_details === null) {
+                        return null;
+                    }
                     return sprintf(
                         "Presentation Action Type '%s' (%d) for Summit '%s' updated: %s by user %s",
                         $label,
diff --git a/app/Audit/ConcreteFormatters/PresentationFormatters/PresentationEventApiAuditLogFormatter.php b/app/Audit/ConcreteFormatters/PresentationFormatters/PresentationEventApiAuditLogFormatter.php
index 70efffb60..375b85008 100644
--- a/app/Audit/ConcreteFormatters/PresentationFormatters/PresentationEventApiAuditLogFormatter.php
+++ b/app/Audit/ConcreteFormatters/PresentationFormatters/PresentationEventApiAuditLogFormatter.php
@@ -30,13 +30,17 @@ protected function formatCreation(array $data): string
         );
     }
 
-    protected function formatUpdate(array $data, array $change_set): string
+    protected function formatUpdate(array $data, array $change_set): ?string
     {
+        $change_details = $this->buildChangeDetails($change_set);
+        if ($change_details === null) {
+            return null;
+        }
         return sprintf(
             "Presentation '%s' (%s) updated: %s by user %s",
             $data['title'],
             $data['id'],
-            $this->buildChangeDetails($change_set),
+            $change_details,
             $this->getUserInfo()
         );
     }
diff --git a/app/Audit/ConcreteFormatters/PresentationFormatters/PresentationLinkAuditLogFormatter.php b/app/Audit/ConcreteFormatters/PresentationFormatters/PresentationLinkAuditLogFormatter.php
index a3a87cfbb..6adb24b51 100644
--- a/app/Audit/ConcreteFormatters/PresentationFormatters/PresentationLinkAuditLogFormatter.php
+++ b/app/Audit/ConcreteFormatters/PresentationFormatters/PresentationLinkAuditLogFormatter.php
@@ -49,6 +49,9 @@ public function format($subject, array $change_set): ?string
 
                 case IAuditStrategy::EVENT_ENTITY_UPDATE:
                     $change_details = $this->buildChangeDetails($change_set);
+                    if ($change_details === null) {
+                        return null;
+                    }
                     return sprintf(
                         "Presentation Link '%s' (%d) for presentation '%s' updated: %s by user %s",
                         $title,
diff --git a/app/Audit/ConcreteFormatters/PresentationFormatters/PresentationMediaUploadAuditLogFormatter.php b/app/Audit/ConcreteFormatters/PresentationFormatters/PresentationMediaUploadAuditLogFormatter.php
index 0ed1b8099..a832a2df9 100644
--- a/app/Audit/ConcreteFormatters/PresentationFormatters/PresentationMediaUploadAuditLogFormatter.php
+++ b/app/Audit/ConcreteFormatters/PresentationFormatters/PresentationMediaUploadAuditLogFormatter.php
@@ -50,6 +50,9 @@ public function format($subject, array $change_set): ?string
 
                 case IAuditStrategy::EVENT_ENTITY_UPDATE:
                     $change_details = $this->buildChangeDetails($change_set);
+                    if ($change_details === null) {
+                        return null;
+                    }
                     return sprintf(
                         "Presentation Media Upload '%s' (%d) for presentation '%s' updated: %s by user %s",
                         $title,
diff --git a/app/Audit/ConcreteFormatters/PresentationFormatters/PresentationSlideAuditLogFormatter.php b/app/Audit/ConcreteFormatters/PresentationFormatters/PresentationSlideAuditLogFormatter.php
index 8f298f87c..38f1c51c6 100644
--- a/app/Audit/ConcreteFormatters/PresentationFormatters/PresentationSlideAuditLogFormatter.php
+++ b/app/Audit/ConcreteFormatters/PresentationFormatters/PresentationSlideAuditLogFormatter.php
@@ -47,6 +47,9 @@ public function format($subject, array $change_set): ?string
 
                 case IAuditStrategy::EVENT_ENTITY_UPDATE:
                     $change_details = $this->buildChangeDetails($change_set);
+                    if ($change_details === null) {
+                        return null;
+                    }
                     return sprintf(
                         "Presentation Slide '%s' (%d) for presentation '%s' updated: %s by user %s",
                         $title,
diff --git a/app/Audit/ConcreteFormatters/PresentationFormatters/PresentationSpeakerAuditLogFormatter.php b/app/Audit/ConcreteFormatters/PresentationFormatters/PresentationSpeakerAuditLogFormatter.php
index f772d130e..c2d45f4f5 100644
--- a/app/Audit/ConcreteFormatters/PresentationFormatters/PresentationSpeakerAuditLogFormatter.php
+++ b/app/Audit/ConcreteFormatters/PresentationFormatters/PresentationSpeakerAuditLogFormatter.php
@@ -47,6 +47,9 @@ public function format($subject, array $change_set): ?string
 
                 case IAuditStrategy::EVENT_ENTITY_UPDATE:
                     $change_details = $this->buildChangeDetails($change_set);
+                    if ($change_details === null) {
+                        return null;
+                    }
                     return sprintf(
                         "Speaker '%s' (%s) updated: %s by user %s",
                         $full_name,
diff --git a/app/Audit/ConcreteFormatters/PresentationFormatters/PresentationSpeakerSummitAssistanceConfirmationAuditLogFormatter.php b/app/Audit/ConcreteFormatters/PresentationFormatters/PresentationSpeakerSummitAssistanceConfirmationAuditLogFormatter.php
index 48a58fdba..697999eb8 100644
--- a/app/Audit/ConcreteFormatters/PresentationFormatters/PresentationSpeakerSummitAssistanceConfirmationAuditLogFormatter.php
+++ b/app/Audit/ConcreteFormatters/PresentationFormatters/PresentationSpeakerSummitAssistanceConfirmationAuditLogFormatter.php
@@ -51,6 +51,9 @@ public function format($subject, array $change_set): ?string
 
                 case IAuditStrategy::EVENT_ENTITY_UPDATE:
                     $change_details = $this->buildChangeDetails($change_set);
+                    if ($change_details === null) {
+                        return null;
+                    }
                     return sprintf(
                         "Speaker Assistance Confirmation (%d) for '%s' on Summit '%s' updated: %s by user %s",
                         $id,
diff --git a/app/Audit/ConcreteFormatters/PresentationFormatters/PresentationSubmissionAuditLogFormatter.php b/app/Audit/ConcreteFormatters/PresentationFormatters/PresentationSubmissionAuditLogFormatter.php
index 813dcb48a..c8bac36a2 100644
--- a/app/Audit/ConcreteFormatters/PresentationFormatters/PresentationSubmissionAuditLogFormatter.php
+++ b/app/Audit/ConcreteFormatters/PresentationFormatters/PresentationSubmissionAuditLogFormatter.php
@@ -30,13 +30,17 @@ protected function formatCreation(array $data): string
         );
     }
 
-    protected function formatUpdate(array $data, array $change_set): string
+    protected function formatUpdate(array $data, array $change_set): ?string
     {
+        $change_details = $this->buildChangeDetails($change_set);
+        if ($change_details === null) {
+            return null;
+        }
         return sprintf(
             "Presentation '%s' (%s) updated: %s by user %s",
             $data['title'],
             $data['id'],
-            $this->buildChangeDetails($change_set),
+            $change_details,
             $this->getUserInfo()
         );
     }
diff --git a/app/Audit/ConcreteFormatters/PresentationFormatters/PresentationTrackChairRatingTypeAuditLogFormatter.php b/app/Audit/ConcreteFormatters/PresentationFormatters/PresentationTrackChairRatingTypeAuditLogFormatter.php
index b87576d68..7c1df4399 100644
--- a/app/Audit/ConcreteFormatters/PresentationFormatters/PresentationTrackChairRatingTypeAuditLogFormatter.php
+++ b/app/Audit/ConcreteFormatters/PresentationFormatters/PresentationTrackChairRatingTypeAuditLogFormatter.php
@@ -44,6 +44,9 @@ public function format($subject, array $change_set): ?string
 
                 case IAuditStrategy::EVENT_ENTITY_UPDATE:
                     $change_details = $this->buildChangeDetails($change_set);
+                    if ($change_details === null) {
+                        return null;
+                    }
                     return sprintf(
                         "Track Chair Rating Type '%s' updated: %s by user %s",
                         $name,
diff --git a/app/Audit/ConcreteFormatters/PresentationFormatters/PresentationTrackChairScoreTypeAuditLogFormatter.php b/app/Audit/ConcreteFormatters/PresentationFormatters/PresentationTrackChairScoreTypeAuditLogFormatter.php
index 7dae84e8e..e52e98a84 100644
--- a/app/Audit/ConcreteFormatters/PresentationFormatters/PresentationTrackChairScoreTypeAuditLogFormatter.php
+++ b/app/Audit/ConcreteFormatters/PresentationFormatters/PresentationTrackChairScoreTypeAuditLogFormatter.php
@@ -46,6 +46,9 @@ public function format($subject, array $change_set): ?string
 
                 case IAuditStrategy::EVENT_ENTITY_UPDATE:
                     $change_details = $this->buildChangeDetails($change_set);
+                    if ($change_details === null) {
+                        return null;
+                    }
                     return sprintf(
                         "Score Type '%s' updated: %s by user %s",
                         $label,
diff --git a/app/Audit/ConcreteFormatters/PresentationFormatters/PresentationUserSubmissionAuditLogFormatter.php b/app/Audit/ConcreteFormatters/PresentationFormatters/PresentationUserSubmissionAuditLogFormatter.php
index 1c17a3e32..5d589b394 100644
--- a/app/Audit/ConcreteFormatters/PresentationFormatters/PresentationUserSubmissionAuditLogFormatter.php
+++ b/app/Audit/ConcreteFormatters/PresentationFormatters/PresentationUserSubmissionAuditLogFormatter.php
@@ -40,6 +40,9 @@ public function format($subject, array $change_set): ?string
 
                 case IAuditStrategy::EVENT_ENTITY_UPDATE:
                     $change_details = $this->buildChangeDetails($change_set);
+                    if ($change_details === null) {
+                        return null;
+                    }
                     return sprintf(
                         "Presentation '%s' (%d) updated: %s by user %s",
                         $title,
diff --git a/app/Audit/ConcreteFormatters/PresentationFormatters/PresentationVideoAuditLogFormatter.php b/app/Audit/ConcreteFormatters/PresentationFormatters/PresentationVideoAuditLogFormatter.php
index 0b911c767..f3b649bea 100644
--- a/app/Audit/ConcreteFormatters/PresentationFormatters/PresentationVideoAuditLogFormatter.php
+++ b/app/Audit/ConcreteFormatters/PresentationFormatters/PresentationVideoAuditLogFormatter.php
@@ -49,6 +49,9 @@ public function format($subject, array $change_set): ?string
 
                 case IAuditStrategy::EVENT_ENTITY_UPDATE:
                     $change_details = $this->buildChangeDetails($change_set);
+                    if ($change_details === null) {
+                        return null;
+                    }
                     return sprintf(
                         "Presentation Video '%s' (%d) for presentation '%s' updated: %s by user %s",
                         $title,
diff --git a/app/Audit/ConcreteFormatters/PresentationTypeAuditLogFormatter.php b/app/Audit/ConcreteFormatters/PresentationTypeAuditLogFormatter.php
index 5ff8b051b..2010326a1 100644
--- a/app/Audit/ConcreteFormatters/PresentationTypeAuditLogFormatter.php
+++ b/app/Audit/ConcreteFormatters/PresentationTypeAuditLogFormatter.php
@@ -50,6 +50,9 @@ public function format($subject, array $change_set): ?string
 
                 case IAuditStrategy::EVENT_ENTITY_UPDATE:
                     $change_details = $this->buildChangeDetails($change_set);
+                    if ($change_details === null) {
+                        return null;
+                    }
                     return sprintf(
                         "Presentation Type '%s' (%d) for Summit '%s' updated: %s by user %s",
                         $type_name,
diff --git a/app/Audit/ConcreteFormatters/RSVPAuditLogFormatter.php b/app/Audit/ConcreteFormatters/RSVPAuditLogFormatter.php
index 883a0930e..627d60c44 100644
--- a/app/Audit/ConcreteFormatters/RSVPAuditLogFormatter.php
+++ b/app/Audit/ConcreteFormatters/RSVPAuditLogFormatter.php
@@ -56,6 +56,9 @@ public function format($subject, array $change_set): ?string
 
                 case IAuditStrategy::EVENT_ENTITY_UPDATE:
                     $change_details = $this->buildChangeDetails($change_set);
+                    if ($change_details === null) {
+                        return null;
+                    }
                     return sprintf(
                         "RSVP (ID: %s) for event '%s' updated: %s by user %s",
                         $id,
diff --git a/app/Audit/ConcreteFormatters/RSVPInvitationAuditLogFormatter.php b/app/Audit/ConcreteFormatters/RSVPInvitationAuditLogFormatter.php
index 345080bba..94fcf2e8c 100644
--- a/app/Audit/ConcreteFormatters/RSVPInvitationAuditLogFormatter.php
+++ b/app/Audit/ConcreteFormatters/RSVPInvitationAuditLogFormatter.php
@@ -48,6 +48,9 @@ public function format($subject, array $change_set): ?string
 
                 case IAuditStrategy::EVENT_ENTITY_UPDATE:
                     $change_details = $this->buildChangeDetails($change_set);
+                    if ($change_details === null) {
+                        return null;
+                    }
                     return sprintf(
                         "RSVP invitation (ID: %s) for attendee '%s' to event '%s' updated: %s by user %s",
                         $id,
diff --git a/app/Audit/ConcreteFormatters/RSVPQuestionTemplateAuditLogFormatter.php b/app/Audit/ConcreteFormatters/RSVPQuestionTemplateAuditLogFormatter.php
index 8b1709491..3b85017e9 100644
--- a/app/Audit/ConcreteFormatters/RSVPQuestionTemplateAuditLogFormatter.php
+++ b/app/Audit/ConcreteFormatters/RSVPQuestionTemplateAuditLogFormatter.php
@@ -52,6 +52,9 @@ public function format($subject, array $change_set): ?string
 
                 case IAuditStrategy::EVENT_ENTITY_UPDATE:
                     $change_details = $this->buildChangeDetails($change_set);
+                    if ($change_details === null) {
+                        return null;
+                    }
                     return sprintf(
                         "%s question '%s' (ID: %s) in RSVP template (ID: %s) updated: %s by user %s",
                         $className,
diff --git a/app/Audit/ConcreteFormatters/RSVPTemplateAuditLogFormatter.php b/app/Audit/ConcreteFormatters/RSVPTemplateAuditLogFormatter.php
index 086b77638..b32299f75 100644
--- a/app/Audit/ConcreteFormatters/RSVPTemplateAuditLogFormatter.php
+++ b/app/Audit/ConcreteFormatters/RSVPTemplateAuditLogFormatter.php
@@ -55,6 +55,9 @@ public function format($subject, array $change_set): ?string
 
                 case IAuditStrategy::EVENT_ENTITY_UPDATE:
                     $change_details = $this->buildChangeDetails($change_set);
+                    if ($change_details === null) {
+                        return null;
+                    }
                     return sprintf(
                         "RSVP Template '%s' (%d) for Summit '%s' updated: %s by user %s",
                         $title,
diff --git a/app/Audit/ConcreteFormatters/ScheduledSummitLocationBannerAuditLogFormatter.php b/app/Audit/ConcreteFormatters/ScheduledSummitLocationBannerAuditLogFormatter.php
index 0cad8a791..d26d9da6b 100644
--- a/app/Audit/ConcreteFormatters/ScheduledSummitLocationBannerAuditLogFormatter.php
+++ b/app/Audit/ConcreteFormatters/ScheduledSummitLocationBannerAuditLogFormatter.php
@@ -50,6 +50,9 @@ public function format($subject, array $change_set): ?string
 
                 case IAuditStrategy::EVENT_ENTITY_UPDATE:
                     $change_details = $this->buildChangeDetails($change_set);
+                    if ($change_details === null) {
+                        return null;
+                    }
                     return sprintf(
                         "Scheduled Location Banner '%s' (%d) for Location '%s' in Summit '%s' updated: %s by user %s",
                         $title,
diff --git a/app/Audit/ConcreteFormatters/SelectionPlanAllowedEditablePresentationQuestionAuditLogFormatter.php b/app/Audit/ConcreteFormatters/SelectionPlanAllowedEditablePresentationQuestionAuditLogFormatter.php
index 306b8d595..4ec90d734 100644
--- a/app/Audit/ConcreteFormatters/SelectionPlanAllowedEditablePresentationQuestionAuditLogFormatter.php
+++ b/app/Audit/ConcreteFormatters/SelectionPlanAllowedEditablePresentationQuestionAuditLogFormatter.php
@@ -48,6 +48,9 @@ public function format($subject, array $change_set): ?string
 
                 case IAuditStrategy::EVENT_ENTITY_UPDATE:
                     $change_details = $this->buildChangeDetails($change_set);
+                    if ($change_details === null) {
+                        return null;
+                    }
                     return sprintf(
                         "Selection Plan Allowed Editable Presentation Question (%s) type '%s' updated: %s by user %s",
                         $id,
diff --git a/app/Audit/ConcreteFormatters/SelectionPlanAllowedPresentationQuestionAuditLogFormatter.php b/app/Audit/ConcreteFormatters/SelectionPlanAllowedPresentationQuestionAuditLogFormatter.php
index 79256eb34..a8c1972d5 100644
--- a/app/Audit/ConcreteFormatters/SelectionPlanAllowedPresentationQuestionAuditLogFormatter.php
+++ b/app/Audit/ConcreteFormatters/SelectionPlanAllowedPresentationQuestionAuditLogFormatter.php
@@ -48,6 +48,9 @@ public function format($subject, array $change_set): ?string
 
                 case IAuditStrategy::EVENT_ENTITY_UPDATE:
                     $change_details = $this->buildChangeDetails($change_set);
+                    if ($change_details === null) {
+                        return null;
+                    }
                     return sprintf(
                         "Selection Plan Allowed Presentation Question (%s) type '%s' updated: %s by user %s",
                         $id,
diff --git a/app/Audit/ConcreteFormatters/SelectionPlanAuditLogFormatter.php b/app/Audit/ConcreteFormatters/SelectionPlanAuditLogFormatter.php
index 07be883a7..429debb02 100644
--- a/app/Audit/ConcreteFormatters/SelectionPlanAuditLogFormatter.php
+++ b/app/Audit/ConcreteFormatters/SelectionPlanAuditLogFormatter.php
@@ -64,6 +64,9 @@ public function format($subject, array $change_set): ?string
 
                 case IAuditStrategy::EVENT_ENTITY_UPDATE:
                     $change_details = $this->buildChangeDetails($change_set);
+                    if ($change_details === null) {
+                        return null;
+                    }
                     return sprintf(
                         "Selection Plan '%s' (%d) for Summit '%s' updated: %s by user %s",
                         $name,
diff --git a/app/Audit/ConcreteFormatters/SpeakerAssistanceAuditLogFormatter.php b/app/Audit/ConcreteFormatters/SpeakerAssistanceAuditLogFormatter.php
index c46827e55..1137e0343 100644
--- a/app/Audit/ConcreteFormatters/SpeakerAssistanceAuditLogFormatter.php
+++ b/app/Audit/ConcreteFormatters/SpeakerAssistanceAuditLogFormatter.php
@@ -57,6 +57,9 @@ public function format($subject, array $change_set): ?string
 
                 case IAuditStrategy::EVENT_ENTITY_UPDATE:
                     $change_details = $this->buildChangeDetails($change_set);
+                    if ($change_details === null) {
+                        return null;
+                    }
                     return sprintf(
                         "Speaker assistance for '%s' (%s) on Summit '%s' updated: %s by user %s",
                         $speaker_name,
diff --git a/app/Audit/ConcreteFormatters/SpeakerRegistrationRequestAuditLogFormatter.php b/app/Audit/ConcreteFormatters/SpeakerRegistrationRequestAuditLogFormatter.php
index 4a3f263cb..7804439cb 100644
--- a/app/Audit/ConcreteFormatters/SpeakerRegistrationRequestAuditLogFormatter.php
+++ b/app/Audit/ConcreteFormatters/SpeakerRegistrationRequestAuditLogFormatter.php
@@ -45,6 +45,9 @@ public function format($subject, array $change_set): ?string
 
                 case IAuditStrategy::EVENT_ENTITY_UPDATE:
                     $change_details = $this->buildChangeDetails($change_set);
+                    if ($change_details === null) {
+                        return null;
+                    }
                     return sprintf(
                         "Speaker registration request for '%s' updated: %s by user %s",
                         $email,
diff --git a/app/Audit/ConcreteFormatters/SponsorAdAuditLogFormatter.php b/app/Audit/ConcreteFormatters/SponsorAdAuditLogFormatter.php
index d71deb701..2b6d3f0ff 100644
--- a/app/Audit/ConcreteFormatters/SponsorAdAuditLogFormatter.php
+++ b/app/Audit/ConcreteFormatters/SponsorAdAuditLogFormatter.php
@@ -46,6 +46,9 @@ public function format($subject, array $change_set): ?string
 
                 case IAuditStrategy::EVENT_ENTITY_UPDATE:
                     $details = $this->buildChangeDetails($change_set);
+                    if ($details === null) {
+                        return null;
+                    }
                     return sprintf(
                         "Sponsor Ad '%s' for Sponsor %s updated: %s by user %s",
                         $text,
diff --git a/app/Audit/ConcreteFormatters/SponsorAuditLogFormatter.php b/app/Audit/ConcreteFormatters/SponsorAuditLogFormatter.php
index 65be986e6..d77759fee 100644
--- a/app/Audit/ConcreteFormatters/SponsorAuditLogFormatter.php
+++ b/app/Audit/ConcreteFormatters/SponsorAuditLogFormatter.php
@@ -49,6 +49,9 @@ public function format($subject, array $change_set): ?string
 
                 case IAuditStrategy::EVENT_ENTITY_UPDATE:
                     $change_details = $this->buildChangeDetails($change_set);
+                    if ($change_details === null) {
+                        return null;
+                    }
                     return sprintf(
                         "Sponsor (%d) for Company '%s' in Summit '%s' updated: %s by user %s",
                         $id,
diff --git a/app/Audit/ConcreteFormatters/SponsorBadgeScanAuditLogFormatter.php b/app/Audit/ConcreteFormatters/SponsorBadgeScanAuditLogFormatter.php
index 73bb47c8e..e32c7d643 100644
--- a/app/Audit/ConcreteFormatters/SponsorBadgeScanAuditLogFormatter.php
+++ b/app/Audit/ConcreteFormatters/SponsorBadgeScanAuditLogFormatter.php
@@ -50,6 +50,9 @@ public function format($subject, array $change_set): ?string
 
                 case IAuditStrategy::EVENT_ENTITY_UPDATE:
                     $details = $this->buildChangeDetails($change_set);
+                    if ($details === null) {
+                        return null;
+                    }
                     return sprintf(
                         "Sponsor Badge Scan (ID: %s) for Sponsor %s updated: %s by user %s",
                         $id,
diff --git a/app/Audit/ConcreteFormatters/SponsorBadgeScanExtraQuestionAnswerAuditLogFormatter.php b/app/Audit/ConcreteFormatters/SponsorBadgeScanExtraQuestionAnswerAuditLogFormatter.php
index 10f9de76c..92df7c8f4 100644
--- a/app/Audit/ConcreteFormatters/SponsorBadgeScanExtraQuestionAnswerAuditLogFormatter.php
+++ b/app/Audit/ConcreteFormatters/SponsorBadgeScanExtraQuestionAnswerAuditLogFormatter.php
@@ -49,6 +49,9 @@ public function format($subject, array $change_set): ?string
 
                 case IAuditStrategy::EVENT_ENTITY_UPDATE:
                     $details = $this->buildChangeDetails($change_set);
+                    if ($details === null) {
+                        return null;
+                    }
                     return sprintf(
                         "Sponsor Badge Scan Extra Question Answer (ID: %s) for question '%s' updated: %s by user %s",
                         $id,
diff --git a/app/Audit/ConcreteFormatters/SponsorMaterialAuditLogFormatter.php b/app/Audit/ConcreteFormatters/SponsorMaterialAuditLogFormatter.php
index e1032b48d..3ab635a12 100644
--- a/app/Audit/ConcreteFormatters/SponsorMaterialAuditLogFormatter.php
+++ b/app/Audit/ConcreteFormatters/SponsorMaterialAuditLogFormatter.php
@@ -50,6 +50,9 @@ public function format($subject, array $change_set): ?string
 
                 case IAuditStrategy::EVENT_ENTITY_UPDATE:
                     $details = $this->buildChangeDetails($change_set);
+                    if ($details === null) {
+                        return null;
+                    }
                     return sprintf(
                         "Sponsor Material (ID: %s) '%s' for Sponsor %s updated: %s by user %s",
                         $id,
diff --git a/app/Audit/ConcreteFormatters/SponsorSocialNetworkAuditLogFormatter.php b/app/Audit/ConcreteFormatters/SponsorSocialNetworkAuditLogFormatter.php
index 8410cd7b3..8919fe62d 100644
--- a/app/Audit/ConcreteFormatters/SponsorSocialNetworkAuditLogFormatter.php
+++ b/app/Audit/ConcreteFormatters/SponsorSocialNetworkAuditLogFormatter.php
@@ -48,6 +48,9 @@ public function format($subject, array $change_set): ?string
 
                 case IAuditStrategy::EVENT_ENTITY_UPDATE:
                     $details = $this->buildChangeDetails($change_set);
+                    if ($details === null) {
+                        return null;
+                    }
                     return sprintf(
                         "Sponsor Social Network (ID: %s) for Sponsor %s updated: %s by user %s",
                         $id,
diff --git a/app/Audit/ConcreteFormatters/SponsorSummitRegistrationDiscountCodeAuditLogFormatter.php b/app/Audit/ConcreteFormatters/SponsorSummitRegistrationDiscountCodeAuditLogFormatter.php
index 0fb6dd04d..ff8e19131 100644
--- a/app/Audit/ConcreteFormatters/SponsorSummitRegistrationDiscountCodeAuditLogFormatter.php
+++ b/app/Audit/ConcreteFormatters/SponsorSummitRegistrationDiscountCodeAuditLogFormatter.php
@@ -68,6 +68,9 @@ public function format($subject, array $change_set): ?string
 
                 case IAuditStrategy::EVENT_ENTITY_UPDATE:
                     $details = $this->buildChangeDetails($change_set);
+                    if ($details === null) {
+                        return null;
+                    }
                     return sprintf(
                         "Sponsor Registration Discount Code '%s' (ID: %s) in Summit '%s' updated: %s (current: %s) by user %s",
                         $code,
diff --git a/app/Audit/ConcreteFormatters/SponsorSummitRegistrationPromoCodeAuditLogFormatter.php b/app/Audit/ConcreteFormatters/SponsorSummitRegistrationPromoCodeAuditLogFormatter.php
index abbe1b366..b6d2387fc 100644
--- a/app/Audit/ConcreteFormatters/SponsorSummitRegistrationPromoCodeAuditLogFormatter.php
+++ b/app/Audit/ConcreteFormatters/SponsorSummitRegistrationPromoCodeAuditLogFormatter.php
@@ -48,6 +48,9 @@ public function format($subject, array $change_set): ?string
 
                 case IAuditStrategy::EVENT_ENTITY_UPDATE:
                     $details = $this->buildChangeDetails($change_set);
+                    if ($details === null) {
+                        return null;
+                    }
                     return sprintf(
                         "Sponsor Registration Promo Code '%s' (ID: %s) in Summit '%s' updated: %s by user %s",
                         $code,
diff --git a/app/Audit/ConcreteFormatters/SponsorUserInfoGrantAuditLogFormatter.php b/app/Audit/ConcreteFormatters/SponsorUserInfoGrantAuditLogFormatter.php
index dbb9c04c3..b2b34a1e7 100644
--- a/app/Audit/ConcreteFormatters/SponsorUserInfoGrantAuditLogFormatter.php
+++ b/app/Audit/ConcreteFormatters/SponsorUserInfoGrantAuditLogFormatter.php
@@ -47,6 +47,9 @@ public function format($subject, array $change_set): ?string
 
                 case IAuditStrategy::EVENT_ENTITY_UPDATE:
                     $details = $this->buildChangeDetails($change_set);
+                    if ($details === null) {
+                        return null;
+                    }
                     return sprintf(
                         "Sponsor User Info Grant (ID: %s) for Sponsor %s updated: %s by user %s",
                         $id,
diff --git a/app/Audit/ConcreteFormatters/SubmissionInvitationAuditLogFormatter.php b/app/Audit/ConcreteFormatters/SubmissionInvitationAuditLogFormatter.php
index ef8d4e316..9793c4b25 100644
--- a/app/Audit/ConcreteFormatters/SubmissionInvitationAuditLogFormatter.php
+++ b/app/Audit/ConcreteFormatters/SubmissionInvitationAuditLogFormatter.php
@@ -53,6 +53,9 @@ public function format($subject, array $change_set): ?string
 
                 case IAuditStrategy::EVENT_ENTITY_UPDATE:
                     $change_details = $this->buildChangeDetails($change_set);
+                    if ($change_details === null) {
+                        return null;
+                    }
                     return sprintf(
                         "Submission invitation for '%s' (%s) updated: %s by user %s",
                         $email,
diff --git a/app/Audit/ConcreteFormatters/SummitAccessLevelTypeAuditLogFormatter.php b/app/Audit/ConcreteFormatters/SummitAccessLevelTypeAuditLogFormatter.php
index 82623fcc4..8c25d09bf 100644
--- a/app/Audit/ConcreteFormatters/SummitAccessLevelTypeAuditLogFormatter.php
+++ b/app/Audit/ConcreteFormatters/SummitAccessLevelTypeAuditLogFormatter.php
@@ -46,6 +46,9 @@ public function format($subject, array $change_set): ?string
 
                 case IAuditStrategy::EVENT_ENTITY_UPDATE:
                     $change_details = $this->buildChangeDetails($change_set);
+                    if ($change_details === null) {
+                        return null;
+                    }
                     return sprintf(
                         "Access Level Type '%s' (%s) in Summit '%s' updated: %s by user %s",
                         $name,
diff --git a/app/Audit/ConcreteFormatters/SummitAirportAuditLogFormatter.php b/app/Audit/ConcreteFormatters/SummitAirportAuditLogFormatter.php
index d42c0f950..6f99b1ebf 100644
--- a/app/Audit/ConcreteFormatters/SummitAirportAuditLogFormatter.php
+++ b/app/Audit/ConcreteFormatters/SummitAirportAuditLogFormatter.php
@@ -46,6 +46,9 @@ public function format($subject, array $change_set): ?string
 
                 case IAuditStrategy::EVENT_ENTITY_UPDATE:
                     $change_details = $this->buildChangeDetails($change_set);
+                    if ($change_details === null) {
+                        return null;
+                    }
                     return sprintf(
                         "Summit Airport '%s' (%d) for Summit '%s' updated: %s by user %s",
                         $name,
diff --git a/app/Audit/ConcreteFormatters/SummitAttendeeAuditLogFormatter.php b/app/Audit/ConcreteFormatters/SummitAttendeeAuditLogFormatter.php
index 3e2a04297..2d3cc1abd 100644
--- a/app/Audit/ConcreteFormatters/SummitAttendeeAuditLogFormatter.php
+++ b/app/Audit/ConcreteFormatters/SummitAttendeeAuditLogFormatter.php
@@ -38,6 +38,9 @@ public function format($subject, array $change_set): ?string
 
                 case IAuditStrategy::EVENT_ENTITY_UPDATE:
                     $details = $this->buildChangeDetails($change_set);
+                    if ($details === null) {
+                        return null;
+                    }
                     return sprintf("Attendee (%s) '%s' updated: %s by user %s", $id, $name, $details, $this->getUserInfo());
 
                 case IAuditStrategy::EVENT_ENTITY_DELETION:
diff --git a/app/Audit/ConcreteFormatters/SummitAttendeeBadgeAuditLogFormatter.php b/app/Audit/ConcreteFormatters/SummitAttendeeBadgeAuditLogFormatter.php
index 41d919d03..780d3f5de 100644
--- a/app/Audit/ConcreteFormatters/SummitAttendeeBadgeAuditLogFormatter.php
+++ b/app/Audit/ConcreteFormatters/SummitAttendeeBadgeAuditLogFormatter.php
@@ -39,6 +39,9 @@ public function format($subject, array $change_set): ?string
                     return sprintf("Attendee Badge (%s) for '%s' created by user %s", $id, $owner_name, $this->getUserInfo());
                 case IAuditStrategy::EVENT_ENTITY_UPDATE:
                     $details = $this->buildChangeDetails($change_set);
+                    if ($details === null) {
+                        return null;
+                    }
                     return sprintf("Attendee Badge (%s) for '%s' updated: %s by user %s", $id, $owner_name, $details, $this->getUserInfo());
                 case IAuditStrategy::EVENT_ENTITY_DELETION:
                     return sprintf("Attendee Badge (%s) for '%s' deleted by user %s", $id, $owner_name, $this->getUserInfo());
diff --git a/app/Audit/ConcreteFormatters/SummitAttendeeNoteAuditLogFormatter.php b/app/Audit/ConcreteFormatters/SummitAttendeeNoteAuditLogFormatter.php
index 20ada397e..3923d962b 100644
--- a/app/Audit/ConcreteFormatters/SummitAttendeeNoteAuditLogFormatter.php
+++ b/app/Audit/ConcreteFormatters/SummitAttendeeNoteAuditLogFormatter.php
@@ -38,6 +38,9 @@ public function format($subject, array $change_set): ?string
                     return sprintf("Attendee Note (%s) for '%s' created by user %s", $id, $owner_name, $this->getUserInfo());
                 case IAuditStrategy::EVENT_ENTITY_UPDATE:
                     $details = $this->buildChangeDetails($change_set);
+                    if ($details === null) {
+                        return null;
+                    }
                     return sprintf("Attendee Note (%s) for '%s' updated: %s by user %s", $id, $owner_name, $details, $this->getUserInfo());
                 case IAuditStrategy::EVENT_ENTITY_DELETION:
                     return sprintf("Attendee Note (%s) for '%s' deleted by user %s", $id, $owner_name, $this->getUserInfo());
diff --git a/app/Audit/ConcreteFormatters/SummitAttendeeTicketAuditLogFormatter.php b/app/Audit/ConcreteFormatters/SummitAttendeeTicketAuditLogFormatter.php
index f3298f8e1..082b89670 100644
--- a/app/Audit/ConcreteFormatters/SummitAttendeeTicketAuditLogFormatter.php
+++ b/app/Audit/ConcreteFormatters/SummitAttendeeTicketAuditLogFormatter.php
@@ -38,6 +38,9 @@ public function format($subject, array $change_set): ?string
                     return sprintf("Attendee Ticket (%s) for '%s' created by user %s", $id, $owner_name, $this->getUserInfo());
                 case IAuditStrategy::EVENT_ENTITY_UPDATE:
                     $details = $this->buildChangeDetails($change_set);
+                    if ($details === null) {
+                        return null;
+                    }
                     return sprintf("Attendee Ticket (%s) for '%s' updated: %s by user %s", $id, $owner_name, $details, $this->getUserInfo());
                 case IAuditStrategy::EVENT_ENTITY_DELETION:
                     return sprintf("Attendee Ticket (%s) for '%s' deleted by user %s", $id, $owner_name, $this->getUserInfo());
diff --git a/app/Audit/ConcreteFormatters/SummitAttendeeTicketTaxAuditLogFormatter.php b/app/Audit/ConcreteFormatters/SummitAttendeeTicketTaxAuditLogFormatter.php
index 680f380f4..be9a66f1a 100644
--- a/app/Audit/ConcreteFormatters/SummitAttendeeTicketTaxAuditLogFormatter.php
+++ b/app/Audit/ConcreteFormatters/SummitAttendeeTicketTaxAuditLogFormatter.php
@@ -41,6 +41,9 @@ public function format($subject, array $change_set): ?string
 
                 case IAuditStrategy::EVENT_ENTITY_UPDATE:
                     $details = $this->buildChangeDetails($change_set);
+                    if ($details === null) {
+                        return null;
+                    }
                     return sprintf("Attendee Ticket Tax (%s) '%s' for ticket %s updated: %s by user %s", $id, $tax_name, $ticket_id, $details, $this->getUserInfo());
 
                 case IAuditStrategy::EVENT_ENTITY_DELETION:
diff --git a/app/Audit/ConcreteFormatters/SummitAuditLogFormatter.php b/app/Audit/ConcreteFormatters/SummitAuditLogFormatter.php
index 7d4b0b10f..4a3dec4ab 100644
--- a/app/Audit/ConcreteFormatters/SummitAuditLogFormatter.php
+++ b/app/Audit/ConcreteFormatters/SummitAuditLogFormatter.php
@@ -43,6 +43,9 @@ public function format($subject, array $change_set): ?string
 
                 case IAuditStrategy::EVENT_ENTITY_UPDATE:
                     $change_details = $this->buildChangeDetails($change_set);
+                    if ($change_details === null) {
+                        return null;
+                    }
                     return sprintf(
                         "Summit '%s' (%d) updated: %s by user %s",
                         $name,
diff --git a/app/Audit/ConcreteFormatters/SummitBadgeFeatureTypeAuditLogFormatter.php b/app/Audit/ConcreteFormatters/SummitBadgeFeatureTypeAuditLogFormatter.php
index 2f6515528..ee3631afc 100644
--- a/app/Audit/ConcreteFormatters/SummitBadgeFeatureTypeAuditLogFormatter.php
+++ b/app/Audit/ConcreteFormatters/SummitBadgeFeatureTypeAuditLogFormatter.php
@@ -46,6 +46,9 @@ public function format($subject, array $change_set): ?string
 
                 case IAuditStrategy::EVENT_ENTITY_UPDATE:
                     $change_details = $this->buildChangeDetails($change_set);
+                    if ($change_details === null) {
+                        return null;
+                    }
                     return sprintf(
                         "Badge Feature Type '%s' (%s) in Summit '%s' updated: %s by user %s",
                         $name,
diff --git a/app/Audit/ConcreteFormatters/SummitBadgeTypeAuditLogFormatter.php b/app/Audit/ConcreteFormatters/SummitBadgeTypeAuditLogFormatter.php
index ab85cdf60..130fe320c 100644
--- a/app/Audit/ConcreteFormatters/SummitBadgeTypeAuditLogFormatter.php
+++ b/app/Audit/ConcreteFormatters/SummitBadgeTypeAuditLogFormatter.php
@@ -46,6 +46,9 @@ public function format($subject, array $change_set): ?string
 
                 case IAuditStrategy::EVENT_ENTITY_UPDATE:
                     $change_details = $this->buildChangeDetails($change_set);
+                    if ($change_details === null) {
+                        return null;
+                    }
                     return sprintf(
                         "Badge Type '%s' (%s) in Summit '%s' updated: %s by user %s",
                         $name,
diff --git a/app/Audit/ConcreteFormatters/SummitBadgeViewTypeAuditLogFormatter.php b/app/Audit/ConcreteFormatters/SummitBadgeViewTypeAuditLogFormatter.php
index a0811acf7..112f42ca3 100644
--- a/app/Audit/ConcreteFormatters/SummitBadgeViewTypeAuditLogFormatter.php
+++ b/app/Audit/ConcreteFormatters/SummitBadgeViewTypeAuditLogFormatter.php
@@ -46,6 +46,9 @@ public function format($subject, array $change_set): ?string
 
                 case IAuditStrategy::EVENT_ENTITY_UPDATE:
                     $change_details = $this->buildChangeDetails($change_set);
+                    if ($change_details === null) {
+                        return null;
+                    }
                     return sprintf(
                         "Badge View Type '%s' (%s) in Summit '%s' updated: %s by user %s",
                         $name,
diff --git a/app/Audit/ConcreteFormatters/SummitBookableVenueRoomAttributeTypeAuditLogFormatter.php b/app/Audit/ConcreteFormatters/SummitBookableVenueRoomAttributeTypeAuditLogFormatter.php
index 2596e30c2..9e3424d3e 100644
--- a/app/Audit/ConcreteFormatters/SummitBookableVenueRoomAttributeTypeAuditLogFormatter.php
+++ b/app/Audit/ConcreteFormatters/SummitBookableVenueRoomAttributeTypeAuditLogFormatter.php
@@ -45,6 +45,9 @@ public function format($subject, array $change_set): ?string
 
                 case IAuditStrategy::EVENT_ENTITY_UPDATE:
                     $change_details = $this->buildChangeDetails($change_set);
+                    if ($change_details === null) {
+                        return null;
+                    }
                     return sprintf(
                         "Summit Bookable Venue Room Attribute Type (%s) '%s' updated: %s by user %s",
                         $id,
diff --git a/app/Audit/ConcreteFormatters/SummitBookableVenueRoomAttributeValueAuditLogFormatter.php b/app/Audit/ConcreteFormatters/SummitBookableVenueRoomAttributeValueAuditLogFormatter.php
index 81561ad31..78023d31b 100644
--- a/app/Audit/ConcreteFormatters/SummitBookableVenueRoomAttributeValueAuditLogFormatter.php
+++ b/app/Audit/ConcreteFormatters/SummitBookableVenueRoomAttributeValueAuditLogFormatter.php
@@ -46,6 +46,9 @@ public function format($subject, array $change_set): ?string
 
                 case IAuditStrategy::EVENT_ENTITY_UPDATE:
                     $change_details = $this->buildChangeDetails($change_set);
+                    if ($change_details === null) {
+                        return null;
+                    }
                     return sprintf(
                         "Summit Bookable Venue Room Attribute Value (%d) '%s' updated: %s by user %s",
                         $id,
diff --git a/app/Audit/ConcreteFormatters/SummitBookableVenueRoomAuditLogFormatter.php b/app/Audit/ConcreteFormatters/SummitBookableVenueRoomAuditLogFormatter.php
index a303b548c..10240ce78 100644
--- a/app/Audit/ConcreteFormatters/SummitBookableVenueRoomAuditLogFormatter.php
+++ b/app/Audit/ConcreteFormatters/SummitBookableVenueRoomAuditLogFormatter.php
@@ -51,6 +51,9 @@ public function format($subject, array $change_set): ?string
 
                 case IAuditStrategy::EVENT_ENTITY_UPDATE:
                     $change_details = $this->buildChangeDetails($change_set);
+                    if ($change_details === null) {
+                        return null;
+                    }
                     return sprintf(
                         "Bookable Venue Room '%s' (%d) in Venue '%s' for Summit '%s' updated: %s by user %s",
                         $name,
diff --git a/app/Audit/ConcreteFormatters/SummitEventAttendanceMetricAuditLogFormatter.php b/app/Audit/ConcreteFormatters/SummitEventAttendanceMetricAuditLogFormatter.php
index 93a597d40..d93c8f067 100644
--- a/app/Audit/ConcreteFormatters/SummitEventAttendanceMetricAuditLogFormatter.php
+++ b/app/Audit/ConcreteFormatters/SummitEventAttendanceMetricAuditLogFormatter.php
@@ -50,6 +50,9 @@ public function format($subject, array $change_set): ?string
 
                 case IAuditStrategy::EVENT_ENTITY_UPDATE:
                     $change_details = $this->buildChangeDetails($change_set);
+                    if ($change_details === null) {
+                        return null;
+                    }
                     return sprintf(
                         "Attendance Metric (%d) for event '%s' updated: %s by user %s",
                         $id,
diff --git a/app/Audit/ConcreteFormatters/SummitEventAuditLogFormatter.php b/app/Audit/ConcreteFormatters/SummitEventAuditLogFormatter.php
index 63f197c9d..760f660fe 100644
--- a/app/Audit/ConcreteFormatters/SummitEventAuditLogFormatter.php
+++ b/app/Audit/ConcreteFormatters/SummitEventAuditLogFormatter.php
@@ -47,6 +47,9 @@ public function format($subject, array $change_set): ?string
 
                 case IAuditStrategy::EVENT_ENTITY_UPDATE:
                     $change_details = $this->buildChangeDetails($change_set);
+                    if ($change_details === null) {
+                        return null;
+                    }
                     return sprintf(
                         "Summit Event '%s' (%d) for Summit '%s' updated: %s by user %s",
                         $title,
diff --git a/app/Audit/ConcreteFormatters/SummitEventTypeAuditLogFormatter.php b/app/Audit/ConcreteFormatters/SummitEventTypeAuditLogFormatter.php
index 087d9b614..5225b70cd 100644
--- a/app/Audit/ConcreteFormatters/SummitEventTypeAuditLogFormatter.php
+++ b/app/Audit/ConcreteFormatters/SummitEventTypeAuditLogFormatter.php
@@ -53,6 +53,9 @@ public function format($subject, array $change_set): ?string
 
                 case IAuditStrategy::EVENT_ENTITY_UPDATE:
                     $change_details = $this->buildChangeDetails($change_set);
+                    if ($change_details === null) {
+                        return null;
+                    }
                     return sprintf(
                         "Event Type '%s' (%d) for Summit '%s' updated: %s by user %s",
                         $type,
diff --git a/app/Audit/ConcreteFormatters/SummitExternalLocationAuditLogFormatter.php b/app/Audit/ConcreteFormatters/SummitExternalLocationAuditLogFormatter.php
index 7c8ce6103..ef92cf191 100644
--- a/app/Audit/ConcreteFormatters/SummitExternalLocationAuditLogFormatter.php
+++ b/app/Audit/ConcreteFormatters/SummitExternalLocationAuditLogFormatter.php
@@ -46,6 +46,9 @@ public function format($subject, array $change_set): ?string
 
                 case IAuditStrategy::EVENT_ENTITY_UPDATE:
                     $change_details = $this->buildChangeDetails($change_set);
+                    if ($change_details === null) {
+                        return null;
+                    }
                     return sprintf(
                         "External Location '%s' (%d) for Summit '%s' updated: %s by user %s",
                         $name,
diff --git a/app/Audit/ConcreteFormatters/SummitGeoLocatedLocationAuditLogFormatter.php b/app/Audit/ConcreteFormatters/SummitGeoLocatedLocationAuditLogFormatter.php
index 2f52254b1..08796ced0 100644
--- a/app/Audit/ConcreteFormatters/SummitGeoLocatedLocationAuditLogFormatter.php
+++ b/app/Audit/ConcreteFormatters/SummitGeoLocatedLocationAuditLogFormatter.php
@@ -46,6 +46,9 @@ public function format($subject, array $change_set): ?string
 
                 case IAuditStrategy::EVENT_ENTITY_UPDATE:
                     $change_details = $this->buildChangeDetails($change_set);
+                    if ($change_details === null) {
+                        return null;
+                    }
                     return sprintf(
                         "Geo-Located Location '%s' (%d) for Summit '%s' updated: %s by user %s",
                         $name,
diff --git a/app/Audit/ConcreteFormatters/SummitHotelAuditLogFormatter.php b/app/Audit/ConcreteFormatters/SummitHotelAuditLogFormatter.php
index 203d05df8..82328aeec 100644
--- a/app/Audit/ConcreteFormatters/SummitHotelAuditLogFormatter.php
+++ b/app/Audit/ConcreteFormatters/SummitHotelAuditLogFormatter.php
@@ -46,6 +46,9 @@ public function format($subject, array $change_set): ?string
 
                 case IAuditStrategy::EVENT_ENTITY_UPDATE:
                     $change_details = $this->buildChangeDetails($change_set);
+                    if ($change_details === null) {
+                        return null;
+                    }
                     return sprintf(
                         "Summit Hotel '%s' (%d) for Summit '%s' updated: %s by user %s",
                         $name,
diff --git a/app/Audit/ConcreteFormatters/SummitLocationBannerAuditLogFormatter.php b/app/Audit/ConcreteFormatters/SummitLocationBannerAuditLogFormatter.php
index 97992b291..69f8b194e 100644
--- a/app/Audit/ConcreteFormatters/SummitLocationBannerAuditLogFormatter.php
+++ b/app/Audit/ConcreteFormatters/SummitLocationBannerAuditLogFormatter.php
@@ -50,6 +50,9 @@ public function format($subject, array $change_set): ?string
 
                 case IAuditStrategy::EVENT_ENTITY_UPDATE:
                     $change_details = $this->buildChangeDetails($change_set);
+                    if ($change_details === null) {
+                        return null;
+                    }
                     return sprintf(
                         "Location Banner '%s' (%d) for Location '%s' in Summit '%s' updated: %s by user %s",
                         $title,
diff --git a/app/Audit/ConcreteFormatters/SummitLocationImageAuditLogFormatter.php b/app/Audit/ConcreteFormatters/SummitLocationImageAuditLogFormatter.php
index 63d34d581..59a61586c 100644
--- a/app/Audit/ConcreteFormatters/SummitLocationImageAuditLogFormatter.php
+++ b/app/Audit/ConcreteFormatters/SummitLocationImageAuditLogFormatter.php
@@ -50,6 +50,9 @@ public function format($subject, array $change_set): ?string
 
                 case IAuditStrategy::EVENT_ENTITY_UPDATE:
                     $change_details = $this->buildChangeDetails($change_set);
+                    if ($change_details === null) {
+                        return null;
+                    }
                     return sprintf(
                         "Location Image '%s' (%d) for Location '%s' in Summit '%s' updated: %s by user %s",
                         $name,
diff --git a/app/Audit/ConcreteFormatters/SummitMediaUploadTypeAuditLogFormatter.php b/app/Audit/ConcreteFormatters/SummitMediaUploadTypeAuditLogFormatter.php
index 76c4da7fa..8d3ab86b3 100644
--- a/app/Audit/ConcreteFormatters/SummitMediaUploadTypeAuditLogFormatter.php
+++ b/app/Audit/ConcreteFormatters/SummitMediaUploadTypeAuditLogFormatter.php
@@ -46,6 +46,9 @@ public function format($subject, array $change_set): ?string
 
                 case IAuditStrategy::EVENT_ENTITY_UPDATE:
                     $change_details = $this->buildChangeDetails($change_set);
+                    if ($change_details === null) {
+                        return null;
+                    }
                     return sprintf(
                         "Media Upload Type '%s' (%d) for Summit '%s' updated: %s by user %s",
                         $name,
diff --git a/app/Audit/ConcreteFormatters/SummitMemberScheduleAuditLogFormatter.php b/app/Audit/ConcreteFormatters/SummitMemberScheduleAuditLogFormatter.php
index d9c45a969..40e1e8c48 100644
--- a/app/Audit/ConcreteFormatters/SummitMemberScheduleAuditLogFormatter.php
+++ b/app/Audit/ConcreteFormatters/SummitMemberScheduleAuditLogFormatter.php
@@ -46,6 +46,9 @@ public function format($subject, array $change_set): ?string
 
            case IAuditStrategy::EVENT_ENTITY_UPDATE:
                $change_details = $this->buildChangeDetails($change_set);
+               if ($change_details === null) {
+                   return null;
+               }
                return sprintf(
                    "Activity '%s' (%s) in user custom schedule updated: %s by user %s",
                    $event_title,
diff --git a/app/Audit/ConcreteFormatters/SummitMetricAuditLogFormatter.php b/app/Audit/ConcreteFormatters/SummitMetricAuditLogFormatter.php
index 413847097..f77026556 100644
--- a/app/Audit/ConcreteFormatters/SummitMetricAuditLogFormatter.php
+++ b/app/Audit/ConcreteFormatters/SummitMetricAuditLogFormatter.php
@@ -46,6 +46,9 @@ public function format($subject, array $change_set): ?string
 
                 case IAuditStrategy::EVENT_ENTITY_UPDATE:
                     $change_details = $this->buildChangeDetails($change_set);
+                    if ($change_details === null) {
+                        return null;
+                    }
                     return sprintf(
                         "Summit Metric Type '%s' (%d) for Summit '%s' updated: %s by user %s",
                         $type,
diff --git a/app/Audit/ConcreteFormatters/SummitOrderAuditLogFormatter.php b/app/Audit/ConcreteFormatters/SummitOrderAuditLogFormatter.php
index 0640a3489..c664edcb8 100644
--- a/app/Audit/ConcreteFormatters/SummitOrderAuditLogFormatter.php
+++ b/app/Audit/ConcreteFormatters/SummitOrderAuditLogFormatter.php
@@ -42,6 +42,9 @@ public function format($subject, array $change_set): ?string
                     return sprintf("Order '%s' (%s) created for '%s' in Summit '%s' with status '%s' by user %s", $order_number, $id, $owner_email, $summit_name, $status, $this->getUserInfo());
                 case IAuditStrategy::EVENT_ENTITY_UPDATE:
                     $details = $this->buildChangeDetails($change_set);
+                    if ($details === null) {
+                        return null;
+                    }
                     return sprintf("Order '%s' (%s) in Summit '%s' updated: %s by user %s", $order_number, $id, $summit_name, $details, $this->getUserInfo());
                 case IAuditStrategy::EVENT_ENTITY_DELETION:
                     return sprintf("Order '%s' (%s) in Summit '%s' deleted by user %s", $order_number, $id, $summit_name, $this->getUserInfo());
diff --git a/app/Audit/ConcreteFormatters/SummitOrderExtraQuestionTypeAuditLogFormatter.php b/app/Audit/ConcreteFormatters/SummitOrderExtraQuestionTypeAuditLogFormatter.php
index fa3d22aa3..2e69fdb35 100644
--- a/app/Audit/ConcreteFormatters/SummitOrderExtraQuestionTypeAuditLogFormatter.php
+++ b/app/Audit/ConcreteFormatters/SummitOrderExtraQuestionTypeAuditLogFormatter.php
@@ -40,6 +40,9 @@ public function format($subject, array $change_set): ?string
                     return sprintf("Order Extra Question '%s' (%s) of type '%s' created in Summit '%s' by user %s", $label, $id, $question_type, $summit_name, $this->getUserInfo());
                 case IAuditStrategy::EVENT_ENTITY_UPDATE:
                     $details = $this->buildChangeDetails($change_set);
+                    if ($details === null) {
+                        return null;
+                    }
                     return sprintf("Order Extra Question '%s' (%s) in Summit '%s' updated: %s by user %s", $label, $id, $summit_name, $details, $this->getUserInfo());
                 case IAuditStrategy::EVENT_ENTITY_DELETION:
                     return sprintf("Order Extra Question '%s' (%s) in Summit '%s' deleted by user %s", $label, $id, $summit_name, $this->getUserInfo());
diff --git a/app/Audit/ConcreteFormatters/SummitPresentationCommentAuditLogFormatter.php b/app/Audit/ConcreteFormatters/SummitPresentationCommentAuditLogFormatter.php
index db473e23f..c214f8c79 100644
--- a/app/Audit/ConcreteFormatters/SummitPresentationCommentAuditLogFormatter.php
+++ b/app/Audit/ConcreteFormatters/SummitPresentationCommentAuditLogFormatter.php
@@ -47,6 +47,9 @@ public function format($subject, array $change_set): ?string
 
                 case IAuditStrategy::EVENT_ENTITY_UPDATE:
                     $change_details = $this->buildChangeDetails($change_set);
+                    if ($change_details === null) {
+                        return null;
+                    }
                     return sprintf(
                         "Presentation Comment (%d) on '%s' updated: %s by user %s",
                         $id,
diff --git a/app/Audit/ConcreteFormatters/SummitProposedScheduleAllowedLocationAuditLogFormatter.php b/app/Audit/ConcreteFormatters/SummitProposedScheduleAllowedLocationAuditLogFormatter.php
index 2870e3ec2..c9a45cbd3 100644
--- a/app/Audit/ConcreteFormatters/SummitProposedScheduleAllowedLocationAuditLogFormatter.php
+++ b/app/Audit/ConcreteFormatters/SummitProposedScheduleAllowedLocationAuditLogFormatter.php
@@ -47,6 +47,9 @@ public function format($subject, array $change_set): ?string
 
                 case IAuditStrategy::EVENT_ENTITY_UPDATE:
                     $change_details = $this->buildChangeDetails($change_set);
+                    if ($change_details === null) {
+                        return null;
+                    }
                     return sprintf(
                         "Proposed Schedule Allowed Location (%d) Track '%s' Location '%s' updated: %s by user %s",
                         $id,
diff --git a/app/Audit/ConcreteFormatters/SummitRefundPolicyTypeAuditLogFormatter.php b/app/Audit/ConcreteFormatters/SummitRefundPolicyTypeAuditLogFormatter.php
index 52c9e9fe3..348f2bc78 100644
--- a/app/Audit/ConcreteFormatters/SummitRefundPolicyTypeAuditLogFormatter.php
+++ b/app/Audit/ConcreteFormatters/SummitRefundPolicyTypeAuditLogFormatter.php
@@ -50,6 +50,9 @@ public function format($subject, array $change_set): ?string
 
                 case IAuditStrategy::EVENT_ENTITY_UPDATE:
                     $change_details = $this->buildChangeDetails($change_set);
+                    if ($change_details === null) {
+                        return null;
+                    }
                     return sprintf(
                         "Refund Policy '%s' (%d) for Summit '%s' updated: %s by user %s",
                         $name,
diff --git a/app/Audit/ConcreteFormatters/SummitRegistrationFeedMetadataAuditLogFormatter.php b/app/Audit/ConcreteFormatters/SummitRegistrationFeedMetadataAuditLogFormatter.php
index 325c91320..f37088413 100644
--- a/app/Audit/ConcreteFormatters/SummitRegistrationFeedMetadataAuditLogFormatter.php
+++ b/app/Audit/ConcreteFormatters/SummitRegistrationFeedMetadataAuditLogFormatter.php
@@ -48,6 +48,9 @@ public function format($subject, array $change_set): ?string
                 case IAuditStrategy::EVENT_ENTITY_UPDATE:
                     $key = $subject->getKey() ?? 'Unknown Key';
                     $change_details = $this->buildChangeDetails($change_set);
+                    if ($change_details === null) {
+                        return null;
+                    }
                     return sprintf(
                         "Summit Registration Feed Metadata (%s) key '%s' updated: %s by user %s",
                         $id,
diff --git a/app/Audit/ConcreteFormatters/SummitSelectedPresentationAuditLogFormatter.php b/app/Audit/ConcreteFormatters/SummitSelectedPresentationAuditLogFormatter.php
index cbadfbb4a..0afccfd09 100644
--- a/app/Audit/ConcreteFormatters/SummitSelectedPresentationAuditLogFormatter.php
+++ b/app/Audit/ConcreteFormatters/SummitSelectedPresentationAuditLogFormatter.php
@@ -49,6 +49,9 @@ public function format($subject, array $change_set): ?string
 
                 case IAuditStrategy::EVENT_ENTITY_UPDATE:
                     $change_details = $this->buildChangeDetails($change_set);
+                    if ($change_details === null) {
+                        return null;
+                    }
                     return sprintf(
                         "Selected Presentation (%d) '%s' updated: %s by user %s",
                         $id,
diff --git a/app/Audit/ConcreteFormatters/SummitSelectedPresentationListAuditLogFormatter.php b/app/Audit/ConcreteFormatters/SummitSelectedPresentationListAuditLogFormatter.php
index 34c889bb6..4eca5172c 100644
--- a/app/Audit/ConcreteFormatters/SummitSelectedPresentationListAuditLogFormatter.php
+++ b/app/Audit/ConcreteFormatters/SummitSelectedPresentationListAuditLogFormatter.php
@@ -51,6 +51,9 @@ public function format($subject, array $change_set): ?string
 
                 case IAuditStrategy::EVENT_ENTITY_UPDATE:
                     $change_details = $this->buildChangeDetails($change_set);
+                    if ($change_details === null) {
+                        return null;
+                    }
                     return sprintf(
                         "Selected Presentation List (%d) '%s' updated: %s by user %s",
                         $id,
diff --git a/app/Audit/ConcreteFormatters/SummitSponsorExtraQuestionTypeAuditLogFormatter.php b/app/Audit/ConcreteFormatters/SummitSponsorExtraQuestionTypeAuditLogFormatter.php
index a806013d2..ee5105f55 100644
--- a/app/Audit/ConcreteFormatters/SummitSponsorExtraQuestionTypeAuditLogFormatter.php
+++ b/app/Audit/ConcreteFormatters/SummitSponsorExtraQuestionTypeAuditLogFormatter.php
@@ -48,6 +48,9 @@ public function format($subject, array $change_set): ?string
 
                 case IAuditStrategy::EVENT_ENTITY_UPDATE:
                     $details = $this->buildChangeDetails($change_set);
+                    if ($details === null) {
+                        return null;
+                    }
                     return sprintf(
                         "Sponsor Extra Question '%s' (ID: %s) for Sponsor %s updated: %s by user %s",
                         $label,
diff --git a/app/Audit/ConcreteFormatters/SummitSponsorshipAddOnAuditLogFormatter.php b/app/Audit/ConcreteFormatters/SummitSponsorshipAddOnAuditLogFormatter.php
index 7bdaa4c49..836760c55 100644
--- a/app/Audit/ConcreteFormatters/SummitSponsorshipAddOnAuditLogFormatter.php
+++ b/app/Audit/ConcreteFormatters/SummitSponsorshipAddOnAuditLogFormatter.php
@@ -39,6 +39,9 @@ public function format($subject, array $change_set): ?string
 
                 case IAuditStrategy::EVENT_ENTITY_UPDATE:
                     $details = $this->buildChangeDetails($change_set);
+                    if ($details === null) {
+                        return null;
+                    }
                     return sprintf("Sponsorship Add-On (%s) '%s' (%s) updated: %s by user %s", $id, $name, $type, $details, $this->getUserInfo());
 
                 case IAuditStrategy::EVENT_ENTITY_DELETION:
diff --git a/app/Audit/ConcreteFormatters/SummitSponsorshipAuditLogFormatter.php b/app/Audit/ConcreteFormatters/SummitSponsorshipAuditLogFormatter.php
index 280f0e224..f5a3ffcd8 100644
--- a/app/Audit/ConcreteFormatters/SummitSponsorshipAuditLogFormatter.php
+++ b/app/Audit/ConcreteFormatters/SummitSponsorshipAuditLogFormatter.php
@@ -47,6 +47,9 @@ public function format($subject, array $change_set): ?string
 
                 case IAuditStrategy::EVENT_ENTITY_UPDATE:
                     $change_details = $this->buildChangeDetails($change_set);
+                    if ($change_details === null) {
+                        return null;
+                    }
                     return sprintf(
                         "Summit Sponsorship (%d) for Sponsor '%s' Type '%s' updated: %s by user %s",
                         $id,
diff --git a/app/Audit/ConcreteFormatters/SummitTaxTypeAuditLogFormatter.php b/app/Audit/ConcreteFormatters/SummitTaxTypeAuditLogFormatter.php
index aa73435b9..fdc949ad5 100644
--- a/app/Audit/ConcreteFormatters/SummitTaxTypeAuditLogFormatter.php
+++ b/app/Audit/ConcreteFormatters/SummitTaxTypeAuditLogFormatter.php
@@ -50,6 +50,9 @@ public function format($subject, array $change_set): ?string
 
                 case IAuditStrategy::EVENT_ENTITY_UPDATE:
                     $change_details = $this->buildChangeDetails($change_set);
+                    if ($change_details === null) {
+                        return null;
+                    }
                     return sprintf(
                         "Tax Type '%s' (%d) for Summit '%s' updated: %s by user %s",
                         $name,
diff --git a/app/Audit/ConcreteFormatters/SummitTicketTypeAuditLogFormatter.php b/app/Audit/ConcreteFormatters/SummitTicketTypeAuditLogFormatter.php
index 830f5c4f9..d25c19308 100644
--- a/app/Audit/ConcreteFormatters/SummitTicketTypeAuditLogFormatter.php
+++ b/app/Audit/ConcreteFormatters/SummitTicketTypeAuditLogFormatter.php
@@ -54,6 +54,9 @@ public function format($subject, array $change_set): ?string
 
                 case IAuditStrategy::EVENT_ENTITY_UPDATE:
                     $change_details = $this->buildChangeDetails($change_set);
+                    if ($change_details === null) {
+                        return null;
+                    }
                     return sprintf(
                         "Ticket Type '%s' (%d) for Summit '%s' updated: %s by user %s",
                         $name,
diff --git a/app/Audit/ConcreteFormatters/SummitTrackChairAuditLogFormatter.php b/app/Audit/ConcreteFormatters/SummitTrackChairAuditLogFormatter.php
index 07780e471..11cd255c1 100644
--- a/app/Audit/ConcreteFormatters/SummitTrackChairAuditLogFormatter.php
+++ b/app/Audit/ConcreteFormatters/SummitTrackChairAuditLogFormatter.php
@@ -50,6 +50,9 @@ public function format($subject, array $change_set): ?string
 
                 case IAuditStrategy::EVENT_ENTITY_UPDATE:
                     $change_details = $this->buildChangeDetails($change_set);
+                    if ($change_details === null) {
+                        return null;
+                    }
                     return sprintf(
                         "Track Chair '%s' updated: %s by user %s",
                         $member_name,
diff --git a/app/Audit/ConcreteFormatters/SummitVenueAuditLogFormatter.php b/app/Audit/ConcreteFormatters/SummitVenueAuditLogFormatter.php
index 4ac585993..8934e2e17 100644
--- a/app/Audit/ConcreteFormatters/SummitVenueAuditLogFormatter.php
+++ b/app/Audit/ConcreteFormatters/SummitVenueAuditLogFormatter.php
@@ -46,6 +46,9 @@ public function format($subject, array $change_set): ?string
 
                 case IAuditStrategy::EVENT_ENTITY_UPDATE:
                     $change_details = $this->buildChangeDetails($change_set);
+                    if ($change_details === null) {
+                        return null;
+                    }
                     return sprintf(
                         "Summit Venue '%s' (%d) for Summit '%s' updated: %s by user %s",
                         $name,
diff --git a/app/Audit/ConcreteFormatters/SummitVenueFloorAuditLogFormatter.php b/app/Audit/ConcreteFormatters/SummitVenueFloorAuditLogFormatter.php
index 31a7a90c1..f9c38bff3 100644
--- a/app/Audit/ConcreteFormatters/SummitVenueFloorAuditLogFormatter.php
+++ b/app/Audit/ConcreteFormatters/SummitVenueFloorAuditLogFormatter.php
@@ -52,6 +52,9 @@ public function format($subject, array $change_set): ?string
 
                 case IAuditStrategy::EVENT_ENTITY_UPDATE:
                     $change_details = $this->buildChangeDetails($change_set);
+                    if ($change_details === null) {
+                        return null;
+                    }
                     return sprintf(
                         "Venue Floor '%s' (Floor #%d) (%d) in Venue '%s' for Summit '%s' updated: %s by user %s",
                         $name,
diff --git a/app/Audit/ConcreteFormatters/SummitVenueRoomAuditLogFormatter.php b/app/Audit/ConcreteFormatters/SummitVenueRoomAuditLogFormatter.php
index 061e53a0c..e4fc0f7f6 100644
--- a/app/Audit/ConcreteFormatters/SummitVenueRoomAuditLogFormatter.php
+++ b/app/Audit/ConcreteFormatters/SummitVenueRoomAuditLogFormatter.php
@@ -51,6 +51,9 @@ public function format($subject, array $change_set): ?string
 
                 case IAuditStrategy::EVENT_ENTITY_UPDATE:
                     $change_details = $this->buildChangeDetails($change_set);
+                    if ($change_details === null) {
+                        return null;
+                    }
                     return sprintf(
                         "Venue Room '%s' (%d) in Venue '%s' for Summit '%s' updated: %s by user %s",
                         $name,
diff --git a/tests/OpenTelemetry/Formatters/ExtraQuestionTypeValueAuditLogFormatterTest.php b/tests/OpenTelemetry/Formatters/ExtraQuestionTypeValueAuditLogFormatterTest.php
index 23e2e671e..73a093b69 100644
--- a/tests/OpenTelemetry/Formatters/ExtraQuestionTypeValueAuditLogFormatterTest.php
+++ b/tests/OpenTelemetry/Formatters/ExtraQuestionTypeValueAuditLogFormatterTest.php
@@ -93,7 +93,6 @@ public function testFormatterHandlesEmptyChangeSet(): void
         $formatter->setContext(AuditContextBuilder::default()->build());
         $result = $formatter->format($this->mockSubject, []);
 
-        $this->assertNotNull($result);
-        $this->assertStringContainsString('updated', $result);
-    }
+        $this->assertNull($result);
+}
 }
diff --git a/tests/OpenTelemetry/Formatters/FileAuditLogFormatterTest.php b/tests/OpenTelemetry/Formatters/FileAuditLogFormatterTest.php
index 12a2fd817..d9160c2a8 100644
--- a/tests/OpenTelemetry/Formatters/FileAuditLogFormatterTest.php
+++ b/tests/OpenTelemetry/Formatters/FileAuditLogFormatterTest.php
@@ -98,9 +98,8 @@ public function testFormatterHandlesEmptyChangeSet(): void
         $formatter->setContext(AuditContextBuilder::default()->build());
         $result = $formatter->format($this->mockSubject, []);
         
-        $this->assertNotNull($result);
-        $this->assertStringContainsString('updated', $result);
-    }
+        $this->assertNull($result);
+}
 
     public function testPropertiesExist(): void
     {
diff --git a/tests/OpenTelemetry/Formatters/PrePaidSummitRegistrationDiscountCodeAuditLogFormatterTest.php b/tests/OpenTelemetry/Formatters/PrePaidSummitRegistrationDiscountCodeAuditLogFormatterTest.php
index 082cb2388..64c8e0994 100644
--- a/tests/OpenTelemetry/Formatters/PrePaidSummitRegistrationDiscountCodeAuditLogFormatterTest.php
+++ b/tests/OpenTelemetry/Formatters/PrePaidSummitRegistrationDiscountCodeAuditLogFormatterTest.php
@@ -221,7 +221,7 @@ public function testFormatterHandlesEmptyChangeSet(): void
         $code = $this->createMockCode("Empty", 0, 0, 0);
         $result = $this->formatter_update->format($code, []);
 
-        $this->assertStringContainsString("properties without changes registered", $result);
-    }
+        $this->assertNull($result);
+}
 
 }
diff --git a/tests/OpenTelemetry/Formatters/ScheduledSummitLocationBannerAuditLogFormatterTest.php b/tests/OpenTelemetry/Formatters/ScheduledSummitLocationBannerAuditLogFormatterTest.php
index ffb12774a..0fbb95bf5 100644
--- a/tests/OpenTelemetry/Formatters/ScheduledSummitLocationBannerAuditLogFormatterTest.php
+++ b/tests/OpenTelemetry/Formatters/ScheduledSummitLocationBannerAuditLogFormatterTest.php
@@ -106,9 +106,8 @@ public function testFormatterHandlesEmptyChangeSet(): void
         $formatter->setContext(AuditContextBuilder::default()->build());
         $result = $formatter->format($this->mockSubject, []);
         
-        $this->assertNotNull($result);
-        $this->assertStringContainsString('updated', $result);
-    }
+        $this->assertNull($result);
+}
 
     public function testPropertiesExist(): void
     {
diff --git a/tests/OpenTelemetry/Formatters/SponsorAdFormatterTest.php b/tests/OpenTelemetry/Formatters/SponsorAdFormatterTest.php
index cdbe79b8c..a86ae8423 100644
--- a/tests/OpenTelemetry/Formatters/SponsorAdFormatterTest.php
+++ b/tests/OpenTelemetry/Formatters/SponsorAdFormatterTest.php
@@ -101,7 +101,6 @@ public function testFormatterHandlesEmptyChangeSet(): void
         $formatter->setContext(AuditContextBuilder::default()->build());
         $result = $formatter->format($this->mockSubject, []);
 
-        $this->assertNotNull($result);
-        $this->assertStringContainsString('updated', $result);
-    }
+        $this->assertNull($result);
+}
 }
diff --git a/tests/OpenTelemetry/Formatters/SponsorBadgeScanExtraQuestionAnswerFormatterTest.php b/tests/OpenTelemetry/Formatters/SponsorBadgeScanExtraQuestionAnswerFormatterTest.php
index ee5a9bf2c..22f43cf27 100644
--- a/tests/OpenTelemetry/Formatters/SponsorBadgeScanExtraQuestionAnswerFormatterTest.php
+++ b/tests/OpenTelemetry/Formatters/SponsorBadgeScanExtraQuestionAnswerFormatterTest.php
@@ -100,7 +100,6 @@ public function testFormatterHandlesEmptyChangeSet(): void
         $formatter->setContext(AuditContextBuilder::default()->build());
         $result = $formatter->format($this->mockSubject, []);
 
-        $this->assertNotNull($result);
-        $this->assertStringContainsString('updated', $result);
-    }
+        $this->assertNull($result);
+}
 }
diff --git a/tests/OpenTelemetry/Formatters/SponsorBadgeScanFormatterTest.php b/tests/OpenTelemetry/Formatters/SponsorBadgeScanFormatterTest.php
index 947964d46..a9f151a61 100644
--- a/tests/OpenTelemetry/Formatters/SponsorBadgeScanFormatterTest.php
+++ b/tests/OpenTelemetry/Formatters/SponsorBadgeScanFormatterTest.php
@@ -106,7 +106,6 @@ public function testFormatterHandlesEmptyChangeSet(): void
         $formatter->setContext(AuditContextBuilder::default()->build());
         $result = $formatter->format($this->mockSubject, []);
 
-        $this->assertNotNull($result);
-        $this->assertStringContainsString('updated', $result);
-    }
+        $this->assertNull($result);
+}
 }
diff --git a/tests/OpenTelemetry/Formatters/SponsorFormatterTest.php b/tests/OpenTelemetry/Formatters/SponsorFormatterTest.php
index d9aea8453..8c10f5219 100644
--- a/tests/OpenTelemetry/Formatters/SponsorFormatterTest.php
+++ b/tests/OpenTelemetry/Formatters/SponsorFormatterTest.php
@@ -99,7 +99,6 @@ public function testFormatterHandlesEmptyChangeSet(): void
         $formatter->setContext(AuditContextBuilder::default()->build());
         $result = $formatter->format($this->mockSubject, []);
 
-        $this->assertNotNull($result);
-        $this->assertStringContainsString('updated', $result);
-    }
+        $this->assertNull($result);
+}
 }
diff --git a/tests/OpenTelemetry/Formatters/SponsorMaterialFormatterTest.php b/tests/OpenTelemetry/Formatters/SponsorMaterialFormatterTest.php
index 8e86cae39..96fdb3f6e 100644
--- a/tests/OpenTelemetry/Formatters/SponsorMaterialFormatterTest.php
+++ b/tests/OpenTelemetry/Formatters/SponsorMaterialFormatterTest.php
@@ -102,7 +102,6 @@ public function testFormatterHandlesEmptyChangeSet(): void
         $formatter->setContext(AuditContextBuilder::default()->build());
         $result = $formatter->format($this->mockSubject, []);
 
-        $this->assertNotNull($result);
-        $this->assertStringContainsString('updated', $result);
-    }
+        $this->assertNull($result);
+}
 }
diff --git a/tests/OpenTelemetry/Formatters/SponsorSocialNetworkFormatterTest.php b/tests/OpenTelemetry/Formatters/SponsorSocialNetworkFormatterTest.php
index 6fd5fb14e..5184c1598 100644
--- a/tests/OpenTelemetry/Formatters/SponsorSocialNetworkFormatterTest.php
+++ b/tests/OpenTelemetry/Formatters/SponsorSocialNetworkFormatterTest.php
@@ -100,7 +100,6 @@ public function testFormatterHandlesEmptyChangeSet(): void
         $formatter->setContext(AuditContextBuilder::default()->build());
         $result = $formatter->format($this->mockSubject, []);
 
-        $this->assertNotNull($result);
-        $this->assertStringContainsString('updated', $result);
-    }
+        $this->assertNull($result);
+}
 }
diff --git a/tests/OpenTelemetry/Formatters/SponsorSummitRegistrationDiscountCodeFormatterTest.php b/tests/OpenTelemetry/Formatters/SponsorSummitRegistrationDiscountCodeFormatterTest.php
index a2df204a6..6aaf79dd7 100644
--- a/tests/OpenTelemetry/Formatters/SponsorSummitRegistrationDiscountCodeFormatterTest.php
+++ b/tests/OpenTelemetry/Formatters/SponsorSummitRegistrationDiscountCodeFormatterTest.php
@@ -101,7 +101,6 @@ public function testFormatterHandlesEmptyChangeSet(): void
         $formatter->setContext(AuditContextBuilder::default()->build());
         $result = $formatter->format($this->mockSubject, []);
 
-        $this->assertNotNull($result);
-        $this->assertStringContainsString('updated', $result);
-    }
+        $this->assertNull($result);
+}
 }
diff --git a/tests/OpenTelemetry/Formatters/SponsorSummitRegistrationPromoCodeFormatterTest.php b/tests/OpenTelemetry/Formatters/SponsorSummitRegistrationPromoCodeFormatterTest.php
index f41fea90b..8ea689a29 100644
--- a/tests/OpenTelemetry/Formatters/SponsorSummitRegistrationPromoCodeFormatterTest.php
+++ b/tests/OpenTelemetry/Formatters/SponsorSummitRegistrationPromoCodeFormatterTest.php
@@ -94,7 +94,6 @@ public function testFormatterHandlesEmptyChangeSet(): void
         $formatter->setContext(AuditContextBuilder::default()->build());
         $result = $formatter->format($this->mockSubject, []);
 
-        $this->assertNotNull($result);
-        $this->assertStringContainsString('updated', $result);
-    }
+        $this->assertNull($result);
+}
 }
diff --git a/tests/OpenTelemetry/Formatters/SponsorUserInfoGrantFormatterTest.php b/tests/OpenTelemetry/Formatters/SponsorUserInfoGrantFormatterTest.php
index 9f6a7c747..168dd94d2 100644
--- a/tests/OpenTelemetry/Formatters/SponsorUserInfoGrantFormatterTest.php
+++ b/tests/OpenTelemetry/Formatters/SponsorUserInfoGrantFormatterTest.php
@@ -101,7 +101,6 @@ public function testFormatterHandlesEmptyChangeSet(): void
         $formatter->setContext(AuditContextBuilder::default()->build());
         $result = $formatter->format($this->mockSubject, []);
 
-        $this->assertNotNull($result);
-        $this->assertStringContainsString('updated', $result);
-    }
+        $this->assertNull($result);
+}
 }
diff --git a/tests/OpenTelemetry/Formatters/SummitAccessLevelTypeAuditLogFormatterTest.php b/tests/OpenTelemetry/Formatters/SummitAccessLevelTypeAuditLogFormatterTest.php
index 72292c652..b09f2ce3f 100644
--- a/tests/OpenTelemetry/Formatters/SummitAccessLevelTypeAuditLogFormatterTest.php
+++ b/tests/OpenTelemetry/Formatters/SummitAccessLevelTypeAuditLogFormatterTest.php
@@ -117,10 +117,8 @@ public function testFormatterHandlesEmptyChangeSet(): void
         $this->formatter_update->setContext($this->audit_context);
         $result = $this->formatter_update->format($access_level, []);
 
-        $this->assertNotNull($result);
-        $this->assertStringContainsString("Test Access", $result);
-        $this->assertStringContainsString("updated", $result);
-    }
+        $this->assertNull($result);
+}
 
     public function testPropertiesExist(): void
     {
diff --git a/tests/OpenTelemetry/Formatters/SummitAttendeeBadgeAuditLogFormatterTest.php b/tests/OpenTelemetry/Formatters/SummitAttendeeBadgeAuditLogFormatterTest.php
index 5d98b7f9d..5f1690a26 100644
--- a/tests/OpenTelemetry/Formatters/SummitAttendeeBadgeAuditLogFormatterTest.php
+++ b/tests/OpenTelemetry/Formatters/SummitAttendeeBadgeAuditLogFormatterTest.php
@@ -106,7 +106,6 @@ public function testFormatterHandlesEmptyChangeSet(): void
         $formatter->setContext(AuditContextBuilder::default()->build());
         $result = $formatter->format($this->mockSubject, []);
 
-        $this->assertNotNull($result);
-        $this->assertStringContainsString('updated', $result);
-    }
+        $this->assertNull($result);
+}
 }
diff --git a/tests/OpenTelemetry/Formatters/SummitAttendeeNoteAuditLogFormatterTest.php b/tests/OpenTelemetry/Formatters/SummitAttendeeNoteAuditLogFormatterTest.php
index 8a045faf1..d214fb91e 100644
--- a/tests/OpenTelemetry/Formatters/SummitAttendeeNoteAuditLogFormatterTest.php
+++ b/tests/OpenTelemetry/Formatters/SummitAttendeeNoteAuditLogFormatterTest.php
@@ -101,7 +101,6 @@ public function testFormatterHandlesEmptyChangeSet(): void
         $formatter->setContext(AuditContextBuilder::default()->build());
         $result = $formatter->format($this->mockSubject, []);
 
-        $this->assertNotNull($result);
-        $this->assertStringContainsString('updated', $result);
-    }
+        $this->assertNull($result);
+}
 }
diff --git a/tests/OpenTelemetry/Formatters/SummitAttendeeTicketAuditLogFormatterTest.php b/tests/OpenTelemetry/Formatters/SummitAttendeeTicketAuditLogFormatterTest.php
index 00b8dd80a..cc50b5d8c 100644
--- a/tests/OpenTelemetry/Formatters/SummitAttendeeTicketAuditLogFormatterTest.php
+++ b/tests/OpenTelemetry/Formatters/SummitAttendeeTicketAuditLogFormatterTest.php
@@ -113,7 +113,6 @@ public function testFormatterHandlesEmptyChangeSet(): void
         $formatter->setContext(AuditContextBuilder::default()->build());
         $result = $formatter->format($this->mockSubject, []);
 
-        $this->assertNotNull($result);
-        $this->assertStringContainsString('updated', $result);
-    }
+        $this->assertNull($result);
+}
 }
diff --git a/tests/OpenTelemetry/Formatters/SummitBadgeFeatureTypeAuditLogFormatterTest.php b/tests/OpenTelemetry/Formatters/SummitBadgeFeatureTypeAuditLogFormatterTest.php
index 11291829d..c175223ea 100644
--- a/tests/OpenTelemetry/Formatters/SummitBadgeFeatureTypeAuditLogFormatterTest.php
+++ b/tests/OpenTelemetry/Formatters/SummitBadgeFeatureTypeAuditLogFormatterTest.php
@@ -119,10 +119,8 @@ public function testFormatterHandlesEmptyChangeSet(): void
         $this->formatter_update->setContext($this->audit_context);
         $result = $this->formatter_update->format($badge_feature, []);
 
-        $this->assertNotNull($result);
-        $this->assertStringContainsString("Test Feature", $result);
-        $this->assertStringContainsString("updated", $result);
-    }
+        $this->assertNull($result);
+}
 
     public function testPropertiesExist(): void
     {
diff --git a/tests/OpenTelemetry/Formatters/SummitBadgeTypeAuditLogFormatterTest.php b/tests/OpenTelemetry/Formatters/SummitBadgeTypeAuditLogFormatterTest.php
index 1965773ff..413c234eb 100644
--- a/tests/OpenTelemetry/Formatters/SummitBadgeTypeAuditLogFormatterTest.php
+++ b/tests/OpenTelemetry/Formatters/SummitBadgeTypeAuditLogFormatterTest.php
@@ -120,10 +120,8 @@ public function testFormatterHandlesEmptyChangeSet(): void
         $this->formatter_update->setContext($this->audit_context);
         $result = $this->formatter_update->format($badge_type, []);
 
-        $this->assertNotNull($result);
-        $this->assertStringContainsString("Test Badge Type", $result);
-        $this->assertStringContainsString("updated", $result);
-    }
+        $this->assertNull($result);
+}
 
     public function testPropertiesExist(): void
     {
diff --git a/tests/OpenTelemetry/Formatters/SummitBadgeViewTypeAuditLogFormatterTest.php b/tests/OpenTelemetry/Formatters/SummitBadgeViewTypeAuditLogFormatterTest.php
index 781f390a0..0f294b0fa 100644
--- a/tests/OpenTelemetry/Formatters/SummitBadgeViewTypeAuditLogFormatterTest.php
+++ b/tests/OpenTelemetry/Formatters/SummitBadgeViewTypeAuditLogFormatterTest.php
@@ -119,10 +119,8 @@ public function testFormatterHandlesEmptyChangeSet(): void
         $this->formatter_update->setContext($this->audit_context);
         $result = $this->formatter_update->format($badge_view, []);
 
-        $this->assertNotNull($result);
-        $this->assertStringContainsString("Test Badge", $result);
-        $this->assertStringContainsString("updated", $result);
-    }
+        $this->assertNull($result);
+}
 
     public function testPropertiesExist(): void
     {
diff --git a/tests/OpenTelemetry/Formatters/SummitBookableVenueRoomAuditLogFormatterTest.php b/tests/OpenTelemetry/Formatters/SummitBookableVenueRoomAuditLogFormatterTest.php
index c592698c0..89e9f1d25 100644
--- a/tests/OpenTelemetry/Formatters/SummitBookableVenueRoomAuditLogFormatterTest.php
+++ b/tests/OpenTelemetry/Formatters/SummitBookableVenueRoomAuditLogFormatterTest.php
@@ -105,9 +105,8 @@ public function testFormatterHandlesEmptyChangeSet(): void
         $formatter->setContext(AuditContextBuilder::default()->build());
         $result = $formatter->format($this->mockSubject, []);
         
-        $this->assertNotNull($result);
-        $this->assertStringContainsString('updated', $result);
-    }
+        $this->assertNull($result);
+}
 
     public function testPropertiesExist(): void
     {
diff --git a/tests/OpenTelemetry/Formatters/SummitEventTypeFormatterTest.php b/tests/OpenTelemetry/Formatters/SummitEventTypeFormatterTest.php
index a131fd8c0..2c8cc9b19 100644
--- a/tests/OpenTelemetry/Formatters/SummitEventTypeFormatterTest.php
+++ b/tests/OpenTelemetry/Formatters/SummitEventTypeFormatterTest.php
@@ -102,9 +102,8 @@ public function testFormatterHandlesEmptyChangeSet(): void
         $formatter->setContext(AuditContextBuilder::default()->build());
         $result = $formatter->format($this->mockSubject, []);
 
-        $this->assertNotNull($result);
-        $this->assertStringContainsString('updated', $result);
-    }
+        $this->assertNull($result);
+}
 
     public function testFormatterHandlesNullCompanyAndSummit(): void
     {
diff --git a/tests/OpenTelemetry/Formatters/SummitLocationBannerAuditLogFormatterTest.php b/tests/OpenTelemetry/Formatters/SummitLocationBannerAuditLogFormatterTest.php
index 7a6b829d1..3b01e448f 100644
--- a/tests/OpenTelemetry/Formatters/SummitLocationBannerAuditLogFormatterTest.php
+++ b/tests/OpenTelemetry/Formatters/SummitLocationBannerAuditLogFormatterTest.php
@@ -104,9 +104,8 @@ public function testFormatterHandlesEmptyChangeSet(): void
         $formatter->setContext(AuditContextBuilder::default()->build());
         $result = $formatter->format($this->mockSubject, []);
         
-        $this->assertNotNull($result);
-        $this->assertStringContainsString('updated', $result);
-    }
+        $this->assertNull($result);
+}
 
     public function testPropertiesExist(): void
     {
diff --git a/tests/OpenTelemetry/Formatters/SummitLocationImageAuditLogFormatterTest.php b/tests/OpenTelemetry/Formatters/SummitLocationImageAuditLogFormatterTest.php
index 4887772f8..2a53d8969 100644
--- a/tests/OpenTelemetry/Formatters/SummitLocationImageAuditLogFormatterTest.php
+++ b/tests/OpenTelemetry/Formatters/SummitLocationImageAuditLogFormatterTest.php
@@ -104,9 +104,8 @@ public function testFormatterHandlesEmptyChangeSet(): void
         $formatter->setContext(AuditContextBuilder::default()->build());
         $result = $formatter->format($this->mockSubject, []);
         
-        $this->assertNotNull($result);
-        $this->assertStringContainsString('updated', $result);
-    }
+        $this->assertNull($result);
+}
 
     public function testPropertiesExist(): void
     {
diff --git a/tests/OpenTelemetry/Formatters/SummitOrderAuditLogFormatterTest.php b/tests/OpenTelemetry/Formatters/SummitOrderAuditLogFormatterTest.php
index 139bd4598..f42cc7ab6 100644
--- a/tests/OpenTelemetry/Formatters/SummitOrderAuditLogFormatterTest.php
+++ b/tests/OpenTelemetry/Formatters/SummitOrderAuditLogFormatterTest.php
@@ -99,7 +99,6 @@ public function testFormatterHandlesEmptyChangeSet(): void
         $formatter->setContext(AuditContextBuilder::default()->build());
         $result = $formatter->format($this->mockSubject, []);
 
-        $this->assertNotNull($result);
-        $this->assertStringContainsString('updated', $result);
-    }
+        $this->assertNull($result);
+}
 }
diff --git a/tests/OpenTelemetry/Formatters/SummitOrderExtraQuestionTypeAuditLogFormatterTest.php b/tests/OpenTelemetry/Formatters/SummitOrderExtraQuestionTypeAuditLogFormatterTest.php
index c5ba74a4b..fc8c9522b 100644
--- a/tests/OpenTelemetry/Formatters/SummitOrderExtraQuestionTypeAuditLogFormatterTest.php
+++ b/tests/OpenTelemetry/Formatters/SummitOrderExtraQuestionTypeAuditLogFormatterTest.php
@@ -94,7 +94,6 @@ public function testFormatterHandlesEmptyChangeSet(): void
         $formatter->setContext(AuditContextBuilder::default()->build());
         $result = $formatter->format($this->mockSubject, []);
 
-        $this->assertNotNull($result);
-        $this->assertStringContainsString('updated', $result);
-    }
+        $this->assertNull($result);
+}
 }
diff --git a/tests/OpenTelemetry/Formatters/SummitRefundPolicyTypeAuditLogFormatterTest.php b/tests/OpenTelemetry/Formatters/SummitRefundPolicyTypeAuditLogFormatterTest.php
index 3caa8bb10..db4e4510f 100644
--- a/tests/OpenTelemetry/Formatters/SummitRefundPolicyTypeAuditLogFormatterTest.php
+++ b/tests/OpenTelemetry/Formatters/SummitRefundPolicyTypeAuditLogFormatterTest.php
@@ -122,7 +122,7 @@ public function testFormatterHandlesEmptyChangeSet(): void
 
         $result = $this->formatter_update->format($policy, []);
 
-        $this->assertStringContainsString("properties without changes registered", $result);
-    }
+        $this->assertNull($result);
+}
 
 }
diff --git a/tests/OpenTelemetry/Formatters/SummitSponsorExtraQuestionTypeAuditLogFormatterTest.php b/tests/OpenTelemetry/Formatters/SummitSponsorExtraQuestionTypeAuditLogFormatterTest.php
index e76b27234..d8c532727 100644
--- a/tests/OpenTelemetry/Formatters/SummitSponsorExtraQuestionTypeAuditLogFormatterTest.php
+++ b/tests/OpenTelemetry/Formatters/SummitSponsorExtraQuestionTypeAuditLogFormatterTest.php
@@ -101,7 +101,6 @@ public function testFormatterHandlesEmptyChangeSet(): void
         $formatter->setContext(AuditContextBuilder::default()->build());
         $result = $formatter->format($this->mockSubject, []);
 
-        $this->assertNotNull($result);
-        $this->assertStringContainsString('updated', $result);
-    }
+        $this->assertNull($result);
+}
 }
diff --git a/tests/OpenTelemetry/Formatters/SummitTaxTypeAuditLogFormatterTest.php b/tests/OpenTelemetry/Formatters/SummitTaxTypeAuditLogFormatterTest.php
index 5ff9653d4..f92b5705a 100644
--- a/tests/OpenTelemetry/Formatters/SummitTaxTypeAuditLogFormatterTest.php
+++ b/tests/OpenTelemetry/Formatters/SummitTaxTypeAuditLogFormatterTest.php
@@ -136,7 +136,7 @@ public function testFormatterHandlesEmptyChangeSet(): void
         $code = $this->createMockTax('Empty Tax', 'EMPTY', 10.0);
         $result = $this->formatter_update->format($code, []);
 
-        $this->assertStringContainsString("properties without changes registered", $result);
-    }
+        $this->assertNull($result);
+}
 
 }
diff --git a/tests/OpenTelemetry/Formatters/SummitTicketTypeAuditLogFormatterTest.php b/tests/OpenTelemetry/Formatters/SummitTicketTypeAuditLogFormatterTest.php
index 2108ec80d..440d218c9 100644
--- a/tests/OpenTelemetry/Formatters/SummitTicketTypeAuditLogFormatterTest.php
+++ b/tests/OpenTelemetry/Formatters/SummitTicketTypeAuditLogFormatterTest.php
@@ -142,7 +142,7 @@ public function testFormatterHandlesEmptyChangeSet(): void
         $ticket_type = $this->createMockTicketType('Empty Ticket', 0.0, 'USD', 0, 0);
         $result = $this->formatter_update->format($ticket_type, []);
 
-        $this->assertStringContainsString("properties without changes registered", $result);
-    }
+        $this->assertNull($result);
+}
 
 }
diff --git a/tests/OpenTelemetry/Formatters/SummitVenueFloorAuditLogFormatterTest.php b/tests/OpenTelemetry/Formatters/SummitVenueFloorAuditLogFormatterTest.php
index 3c6d3a7bf..02d9798cb 100644
--- a/tests/OpenTelemetry/Formatters/SummitVenueFloorAuditLogFormatterTest.php
+++ b/tests/OpenTelemetry/Formatters/SummitVenueFloorAuditLogFormatterTest.php
@@ -105,9 +105,8 @@ public function testFormatterHandlesEmptyChangeSet(): void
         $formatter->setContext(AuditContextBuilder::default()->build());
         $result = $formatter->format($this->mockSubject, []);
         
-        $this->assertNotNull($result);
-        $this->assertStringContainsString('updated', $result);
-    }
+        $this->assertNull($result);
+}
 
     public function testPropertiesExist(): void
     {
diff --git a/tests/Unit/Audit/AbstractAuditLogFormatterDateNoiseTest.php b/tests/Unit/Audit/AbstractAuditLogFormatterDateNoiseTest.php
deleted file mode 100644
index 4b5a3ee6a..000000000
--- a/tests/Unit/Audit/AbstractAuditLogFormatterDateNoiseTest.php
+++ /dev/null
@@ -1,108 +0,0 @@
-<?php
-
-namespace Tests\Unit\Audit;
-
-/**
- * Copyright 2026 OpenStack Foundation
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- * http://www.apache.org/licenses/LICENSE-2.0
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- **/
-
-use App\Audit\AbstractAuditLogFormatter;
-use App\Audit\Interfaces\IAuditStrategy;
-use DateTime;
-use DateTimeZone;
-use Tests\TestCase;
-
-final class AbstractAuditLogFormatterDateNoiseTest extends TestCase
-{
-    public function testBuildChangeDetailsIgnoresDateTimeSameSecondNoise(): void
-    {
-        $formatter = new ExposingAuditFormatter(IAuditStrategy::EVENT_ENTITY_UPDATE);
-
-        $oldUtc = new DateTime('2026-01-02 03:04:05', new DateTimeZone('UTC'));
-        $newLocalSameSecond = new DateTime('2026-01-02 00:04:05', new DateTimeZone('America/Argentina/Buenos_Aires'));
-
-        $details = $formatter->publicBuildChangeDetails([
-            'submission_begin_date' => [$oldUtc, $newLocalSameSecond],
-        ]);
-
-        $this->assertSame('properties without changes registered', $details);
-        $this->assertFalse($formatter->hasMeaningfulChanges([
-            'submission_begin_date' => [$oldUtc, $newLocalSameSecond],
-        ]));
-    }
-
-    public function testBuildChangeDetailsIgnoresMultipleDateFieldsWithSameInstant(): void
-    {
-        $formatter = new ExposingAuditFormatter(IAuditStrategy::EVENT_ENTITY_UPDATE);
-
-        $old = new DateTime('2025-07-02 07:00:00', new DateTimeZone('UTC'));
-        $newSame = new DateTime('2025-07-02 07:00:00', new DateTimeZone('UTC'));
-
-        $details = $formatter->publicBuildChangeDetails([
-            'submission_begin_date' => [$old, $newSame],
-            'submission_end_date' => [$old, $newSame],
-            'selection_begin_date' => [$old, $newSame],
-            'selection_end_date' => [$old, $newSame],
-        ]);
-
-        $this->assertSame('properties without changes registered', $details);
-    }
-
-    public function testBuildChangeDetailsStillShowsRealDateTimeChange(): void
-    {
-        $formatter = new ExposingAuditFormatter(IAuditStrategy::EVENT_ENTITY_UPDATE);
-
-        $old = new DateTime('2026-01-02 03:04:05', new DateTimeZone('UTC'));
-        $new = new DateTime('2026-01-02 03:04:06', new DateTimeZone('UTC'));
-
-        $details = $formatter->publicBuildChangeDetails([
-            'submission_begin_date' => [$old, $new],
-        ]);
-
-        $this->assertStringContainsString('submission_begin_date', $details);
-        $this->assertStringContainsString('03:04:05', $details);
-        $this->assertStringContainsString('03:04:06', $details);
-        $this->assertTrue($formatter->hasMeaningfulChanges([
-            'submission_begin_date' => [$old, $new],
-        ]));
-    }
-
-    public function testBuildChangeDetailsKeepsOtherNonDateChanges(): void
-    {
-        $formatter = new ExposingAuditFormatter(IAuditStrategy::EVENT_ENTITY_UPDATE);
-
-        $oldUtc = new DateTime('2026-01-02 03:04:05', new DateTimeZone('UTC'));
-        $newLocalSameSecond = new DateTime('2026-01-02 00:04:05', new DateTimeZone('America/Argentina/Buenos_Aires'));
-
-        $details = $formatter->publicBuildChangeDetails([
-            'submission_begin_date' => [$oldUtc, $newLocalSameSecond],
-            'name' => ['Old', 'New'],
-        ]);
-
-        $this->assertStringContainsString('1 field(s) modified', $details);
-        $this->assertStringContainsString('Property "name" has changed', $details);
-        $this->assertStringNotContainsString('submission_begin_date', $details);
-    }
-}
-
-final class ExposingAuditFormatter extends AbstractAuditLogFormatter
-{
-    public function publicBuildChangeDetails(array $change_set): string
-    {
-        return $this->buildChangeDetails($change_set);
-    }
-
-    public function format(mixed $subject, array $change_set): ?string
-    {
-        return null;
-    }
-}
diff --git a/tests/Unit/Audit/AbstractAuditLogFormatterHasMeaningfulChangesTest.php b/tests/Unit/Audit/AbstractAuditLogFormatterHasMeaningfulChangesTest.php
deleted file mode 100644
index a8e5e39fb..000000000
--- a/tests/Unit/Audit/AbstractAuditLogFormatterHasMeaningfulChangesTest.php
+++ /dev/null
@@ -1,100 +0,0 @@
-<?php
-
-namespace Tests\Unit\Audit;
-
-/**
- * Copyright 2026 OpenStack Foundation
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- * http://www.apache.org/licenses/LICENSE-2.0
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- **/
-
-use App\Audit\AbstractAuditLogFormatter;
-use App\Audit\Interfaces\IAuditStrategy;
-use DateTimeImmutable;
-use DateTimeZone;
-use Tests\TestCase;
-
-final class AbstractAuditLogFormatterHasMeaningfulChangesTest extends TestCase
-{
-    /**
-     * @dataProvider provideNoOpChangeSets
-     */
-    public function testHasMeaningfulChangesReturnsFalseForNoOps(array $changeSet): void
-    {
-        $formatter = new ExposingMeaningfulAuditFormatter(IAuditStrategy::EVENT_ENTITY_UPDATE);
-        $this->assertFalse($formatter->hasMeaningfulChanges($changeSet));
-        $this->assertSame(AbstractAuditLogFormatter::NO_CHANGES_REGISTERED_MESSAGE, $formatter->publicBuildChangeDetails($changeSet));
-    }
-
-    /**
-     * @dataProvider provideMeaningfulChangeSets
-     */
-    public function testHasMeaningfulChangesReturnsTrueForRealChanges(array $changeSet): void
-    {
-        $formatter = new ExposingMeaningfulAuditFormatter(IAuditStrategy::EVENT_ENTITY_UPDATE);
-        $this->assertTrue($formatter->hasMeaningfulChanges($changeSet));
-        $this->assertNotSame(AbstractAuditLogFormatter::NO_CHANGES_REGISTERED_MESSAGE, $formatter->publicBuildChangeDetails($changeSet));
-    }
-
-    public static function provideNoOpChangeSets(): array
-    {
-        $dtUtc = new DateTimeImmutable('2026-01-02 03:04:05', new DateTimeZone('UTC'));
-        $dtSameInstantOtherTz = new DateTimeImmutable('2026-01-02 00:04:05', new DateTimeZone('America/Argentina/Buenos_Aires'));
-
-        return [
-            'same-string' => [[
-                'name' => ['abc', 'abc'],
-            ]],
-            'same-bool' => [[
-                'is_enabled' => [true, true],
-            ]],
-            'same-null' => [[
-                'submission_lock_down_presentation_status_date' => [null, null],
-            ]],
-            'datetime-same-instant-different-tz' => [[
-                'submission_begin_date' => [$dtUtc, $dtSameInstantOtherTz],
-            ]],
-        ];
-    }
-
-    public static function provideMeaningfulChangeSets(): array
-    {
-        $dt1 = new DateTimeImmutable('2026-01-02 03:04:05', new DateTimeZone('UTC'));
-        $dt2 = new DateTimeImmutable('2026-01-02 03:04:06', new DateTimeZone('UTC'));
-
-        return [
-            'string-changed' => [[
-                'name' => ['abc', 'def'],
-            ]],
-            'bool-changed' => [[
-                'is_hidden' => [false, true],
-            ]],
-            'null-to-value' => [[
-                'max_submission_allowed_per_user' => [null, 3],
-            ]],
-            'datetime-changed' => [[
-                'submission_begin_date' => [$dt1, $dt2],
-            ]],
-        ];
-    }
-}
-
-final class ExposingMeaningfulAuditFormatter extends AbstractAuditLogFormatter
-{
-    public function publicBuildChangeDetails(array $change_set): string
-    {
-        return $this->buildChangeDetails($change_set);
-    }
-
-    public function format(mixed $subject, array $change_set): ?string
-    {
-        return null;
-    }
-}
diff --git a/tests/Unit/Audit/AuditLogOtlpStrategyNoOpSuppressionTest.php b/tests/Unit/Audit/AuditLogOtlpStrategyNoOpSuppressionTest.php
deleted file mode 100644
index 578466c95..000000000
--- a/tests/Unit/Audit/AuditLogOtlpStrategyNoOpSuppressionTest.php
+++ /dev/null
@@ -1,93 +0,0 @@
-<?php
-
-namespace Tests\Unit\Audit;
-
-/**
- * Copyright 2026 OpenStack Foundation
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- * http://www.apache.org/licenses/LICENSE-2.0
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- **/
-
-use App\Audit\AbstractAuditLogFormatter;
-use App\Audit\AuditContext;
-use App\Audit\AuditLogOtlpStrategy;
-use App\Audit\IAuditLogFormatterFactory;
-use App\Audit\Interfaces\IAuditStrategy;
-use App\Jobs\EmitAuditLogJob;
-use DateTimeImmutable;
-use DateTimeZone;
-use Illuminate\Support\Facades\Bus;
-use Illuminate\Support\Facades\Config;
-use Tests\TestCase;
-
-final class AuditLogOtlpStrategyNoOpSuppressionTest extends TestCase
-{
-    public function testAuditSkipsDispatchWhenNoMeaningfulChanges(): void
-    {
-        Bus::fake();
-        Config::set('opentelemetry.enabled', true);
-
-        $formatterFactory = new class implements IAuditLogFormatterFactory {
-            public function make(AuditContext $ctx, mixed $subject, string $event_type): ?\App\Audit\IAuditLogFormatter
-            {
-                return new class($event_type) extends AbstractAuditLogFormatter {
-                    public function format(mixed $subject, array $change_set): ?string
-                    {
-                        return 'should-not-be-used';
-                    }
-                };
-            }
-        };
-
-        $strategy = new AuditLogOtlpStrategy($formatterFactory);
-
-        $dtUtc = new DateTimeImmutable('2026-01-02 03:04:05', new DateTimeZone('UTC'));
-        $dtSameInstantOtherTz = new DateTimeImmutable('2026-01-02 00:04:05', new DateTimeZone('America/Argentina/Buenos_Aires'));
-
-        $strategy->audit(
-            subject: (object) ['id' => 1],
-            change_set: ['submission_begin_date' => [$dtUtc, $dtSameInstantOtherTz]],
-            event_type: IAuditStrategy::EVENT_ENTITY_UPDATE,
-            ctx: new AuditContext()
-        );
-
-        Bus::assertNotDispatched(EmitAuditLogJob::class);
-    }
-
-    public function testAuditDispatchesWhenMeaningfulChangesExist(): void
-    {
-        Bus::fake();
-        Config::set('opentelemetry.enabled', true);
-
-        $formatterFactory = new class implements IAuditLogFormatterFactory {
-            public function make(AuditContext $ctx, mixed $subject, string $event_type): ?\App\Audit\IAuditLogFormatter
-            {
-                return new class($event_type) extends AbstractAuditLogFormatter {
-                    public function format(mixed $subject, array $change_set): ?string
-                    {
-                        return 'ok';
-                    }
-                };
-            }
-        };
-
-        $strategy = new AuditLogOtlpStrategy($formatterFactory);
-
-        $strategy->audit(
-            subject: (object) ['id' => 1],
-            change_set: ['name' => ['a', 'b']],
-            event_type: IAuditStrategy::EVENT_ENTITY_UPDATE,
-            ctx: new AuditContext()
-        );
-
-        Bus::assertDispatched(EmitAuditLogJob::class);
-    }
-}
-
diff --git a/tests/Unit/Audit/SummitSponsorExtraQuestionTypeAuditLogFormatterTest.php b/tests/Unit/Audit/SummitSponsorExtraQuestionTypeAuditLogFormatterTest.php
index c50aa12b8..e16ac418b 100644
--- a/tests/Unit/Audit/SummitSponsorExtraQuestionTypeAuditLogFormatterTest.php
+++ b/tests/Unit/Audit/SummitSponsorExtraQuestionTypeAuditLogFormatterTest.php
@@ -145,8 +145,7 @@ public function test_deletion_format_does_not_crash_when_sponsor_is_cleared(): v
     }
 
     /**
-     * The audit formatter is also invoked on updates; ensure the same
-     * null-safe path is taken there.
+     * On update with no meaningful changes, formatter should return null.
      */
     public function test_update_format_does_not_crash_when_sponsor_is_cleared(): void
     {
@@ -157,10 +156,7 @@ public function test_update_format_does_not_crash_when_sponsor_is_cleared(): voi
 
         $result = $formatter->format($question, []);
 
-        self::assertIsString($result);
-        self::assertStringContainsString(self::LABEL, $result);
-        self::assertStringContainsString('Unknown Sponsor', $result);
-        self::assertStringContainsString('updated', $result);
+        self::assertNull($result);
     }
 
     /**