It would be great if transactions we delete went into a Recycle Bin. Not only would this be beneficial for the standard reason of a straight up mistake. But sometimes the app merges transactions that are not related and even though there is an indicator, its easy to miss. There is currently no way to review what was merged so on deletion, some unknown transaction gets deleted with the intended target.
The Recycle Bin transactions would be permanently deleted after X days of course.