Om_Audio said: ... I receive a payment for an invoice- add check image- etc. Done....
Are you Syncing to Mobile/Web? AND do you use the Mobile app on your smartphone or the Quicken on the Web feature?
If you answer "no" to both, turn Sync off completely. You don't need it. The Sync process should only be used in conjunction with the Quicken app for Smartphones or the Quicken on the Web browser app. It cannot be used as a replacement for backing up and restoring your Quicken data file.
If yes, try to Reset Sync so that the current cloud sync file is replaced with a fresh complete copy Do note that a full Sync process may take many minutes to complete.
Log out of your mobile app, then do this on your desktop / laptop:
How to reset Sync to Cloud
Now log back into your mobile app
How to turn off Sync to Cloud for the current data file