The company I work for has gone through 5 accountants in the last year and a half. Needless to say, certain things have gotten a bit frustrating. The girl I replaced was the queen of pre-payments.  Our business should never have any pre-payments (and if we do, something is wrong).  Here's my issue. I'm looking at one customer in particular.  A prepayment was entered on their account 2/14/14, however the date used for the prepayment was 2/14/2018 (don't know how she time traveled).  Now whenever I bill this customer it shows that prepayment on their "prior charges due".  They keep sending notes with their payments asking to take this credit.  The credit was used... 2/28/2014.  I tried to go in and just adjust it to change the date but Sage won't let me do that.  I'm hoping someone can help me figure out how to fix this so I can get this customer's account correct.  Help!!!!!