Hello! I am having this issue as well. When I tried to reconcile for March 2019, a deposit from November of 2017 showed up!! After 4 days of reading (and attempting) almost every fix in this thread, nothing has worked. The only option I have not tried was the "exclude" transaction as I cannot seem to locate this option in Quickbooks Desktop. I was able to track down the date this 'magically reappeared' in my Reconciliation Screen. It was the day after I successfully completed January 2019's Reconciliation. If I restore the back-up from that day, it's all is good. But, if I restore the back-up from the following day, 02/15/19, it's wrong. I've spent too much time on this already, I cannot recreate every transaction since 02/14/19. There has to be another solution, please help!!