It would be great to be able to adjust invoices that were paid by credit cards.  In most cases I will receive a receipt that has a tip included.  I'll enter the receipt into the system but then when I receive the bank statement in the new month, the receipt ended up not including the tip and I'll end up having to delete the invoice, re-record it, but now that the previous month is closed the receipt ends up not in the actual month it occurred.  This also happens when a receipt may not include a tip but then comes in with a tip included on the statements.  We end up with a lot of receipts not correctly accounted for in the months the occurred.