Registry key "plone.types_not_searched" still contains "Discussion Item" in Plone 6.1

[jensens]

Preconditions:

• in a 6.1.1 site
• after an update from 6.0.x,
• without plone.app.discussioin installed
• but in prior setup available,

There is a entry "Discussion Item" left in the registry for plone.types_not_searched (list of strings).

When trying to load an add-on profile with registry records I got:

Traceback (innermost last):
  Module ZPublisher.WSGIPublisher, line 181, in transaction_pubevents
  Module ZPublisher.WSGIPublisher, line 390, in publish_module
  Module ZPublisher.WSGIPublisher, line 284, in publish
  Module ZPublisher.mapply, line 98, in mapply
  Module ZPublisher.WSGIPublisher, line 68, in call_object
  Module Products.GenericSetup.tool, line 591, in manage_importAllSteps
  Module Products.GenericSetup.tool, line 393, in runAllImportStepsFromProfile
   - __traceback_info__: profile-akbild.portal:default
  Module Products.GenericSetup.tool, line 1504, in _runImportStepsFromContext
  Module Products.GenericSetup.tool, line 1316, in _doRunImportStep
   - __traceback_info__: plone.app.registry
  Module plone.app.registry.exportimport.handler, line 79, in importRegistry
   - __traceback_info__: registry.xml
  Module plone.app.registry.exportimport.handler, line 123, in importDocument
  Module plone.app.registry.exportimport.handler, line 324, in importRecord
   - __traceback_info__: record name: plone.types_not_searched
  Module plone.registry.record, line 79, in _set_value
  Module zope.schema._bootstrapfields, line 295, in validate
  Module zope.schema._field, line 772, in _validate
zope.schema._bootstrapinterfaces.WrongContainedType: ([ConstraintNotSatisfied('Discussion Item', '')], 'value')

[gogobd]

As a workaround you could go to .../Plone/portal_registry/edit/plone.types_not_searched and click "Sichern" i.e. "Save".