It seems that if a transaction is already in a group, it cannot be re-assigned to a new group. This is probably good, but it is inconvenient if an existing group is being amended with a new transaction.
Let's say we have Transaction A, B, C, D. A and B are already grouped.
- Grouping A, B and C: allowed, because it's just adding an extra transaction
- Grouping A and D: not allowed because it would put a transaction in two groups.
It seems that if a transaction is already in a group, it cannot be re-assigned to a new group. This is probably good, but it is inconvenient if an existing group is being amended with a new transaction.
Let's say we have Transaction A, B, C, D. A and B are already grouped.