A new feature has been added to undo transaction assignments. Once a transaction has been assigned to an envelope it cannot be edited or deleted. In can however be "undone". If you undo an "Income Allocation" transaction it will simply move the amount back to the unallocated income box. If you undo a transaction, it will move back to the unassigned transactions view. From there you can edit or delete the transaction if that is what you wish to do.

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