Balance Sheets ran for same period don't match

We use Sage 50 Quantum. I ran a balance sheet for period ending 12/31/20 back on February 24th 2021.  Today I ran the balance sheet for the same period 12/31/20 and the retained earnings GL is different from the report I ran in February. I am wondering if there is a glitch in my financial statement or if somehow a transaction in a previous year was corrupted or reversed.  Has anyone seen this happen or know a fix? The difference between the two reports is a dividend from 2019 - but I dont know how it is somehow showing up all of a sudden