I use Quicken Classic Vers. R53.32 on Windows 11 Home Vers 22H2. I have used Quicken for decades. It is not connected to my bank. I reconcile manually every month with my bank statement and last did so on Dec 29. Yesterday I noticed that my checking balance in Quicken had jumped by $20,000. I can find no unreconciled entries or duplicates, nor any evidence when it was incorporated into my balance. The error seems to track back in time past my last 4 or 5 reconciliations, during which it had not shown up. Help!