Quicken for Windows, R59.6 I check my Discover Card account online most days, and every day i use Quicken I compare online balance and detail to Quicken. Discover Card account in Quicken has been constant trouble for months. CC-501, CC-502 and CC-506 errors, transactions not downloading…. Have had to Deactivate/Activate several times in the last few months. In late July Quicken did not balance to online Discover Center. I searched for missing, duplicate, incorrect entries but found nothing. When the August Discover statement came out i made a correcting entry in Quicken to balance the account with the Discover Center. Late September Quicken was out of balance again and has been since. Again searched for missing, duplicate, or incorrect entries and found nothing. Entry by entry matched online details. I restored a Quicken backup from 9/27 and found the BALANCE column does not match the current data BALANCEs even going back a couple months, all Balance totals were off the same amount. On Sept 28 Quicken updated to R59.6. On Oct 1 attempts to update Discover in Quicken resulted in CC-506 errors. Finally Deactivated/Activated and download appeared successful. What is causing the Balance to suddenly become WRONG? The Balance is changed as far back as i can check. My checking account shows register details back to 1994, however, the Discover register only goes back to Oct 2017. Does Deactivate/activate truncate entries?