In Accounting, changing a payment after it was deposited, such as its date, used to list it as waiting to be deposited again. The deposit now still covers it. If the amount goes up, only the extra waits. If it goes down or the payment is removed, the overview shows that Undeposited funds is below zero until the payment or the deposit is corrected.
A bank transaction matched to a payment also stays matched when the payment changes, as long as its amount is the same.