So I posted a transaction in Bank Services (deposit) in January - it was the wrong amount (posted say $150 when it was only $100) - so I went in and reversed it and reposted the transaction with the correct amount. No big deal right? well now my boss is telling me taht when I made the transaction reversal - it was dated for February instead of January and she'd like it to show up in January... apparently I cannot reverse a reversal and SAGE 300 has some HUGE issue with letting people change dates.. I don't understand why it is SO difficult to change a simple date when on literally EVERY other accounting program I have ever used from Xero to Quickbooks to Simply Accounting there is a small button on the entry screen that allows you to "adjust" the invoice and change any dates or anything you need to do and then reposts it. Why is this so difficult for SAGE 300 to implement? now I can't even fix an incorrect date on a reversal because there is no way to reverse a reversal!  - I'm only just learning bookkeeping for the past 6 months or so (just started my post-secondary classes on it in the fall) and i'm quite literally the only bookkeeper here in my very small office. I have no accountant or anyone like that whom I can ask to walk me through what the heck I am supposed to do now with this $150 reversal in the wrong month that I can't seem to fix.  any help would be appreciated - preferred with step by step instructions? cuz I saw some post that just says "make a contra entry" - well that makes no sense to me. Not a piece of jargon or language I have learned yet so I need some pretty simplistic explanations please and thank you