GPTip42day - How do I void a bank deposit after it's been reconciled?

The short answer is - no can do.  However, if you encounter a situation where a deposit was posted into the wrong period and subsequently reconciled, in Bank Transaction Entry, just create a decrease adjustment in the incorrect period and an increase adjustment in the correct period to get the deposit dollars posted in the right period.  Then clear these adjustments against each other in the next reconciliation.