I've only recently restarted Cloud Syncing and I think one of the reasons why I turned it off is because this bug keeps appearing. This is an easily repeatable scenario in my data file, for which I have done a Validate (and it reports "1 scheduled transactions corrected"). My paycheck increases when I do a Cloud Sync. While I'd love to be able to simply get a raise for doing so, alas - this appears to be a bug. I can edit the paycheck, don't make any changes to it, and once saved, it properly shows the amount. But if I redo a Cloud Sync, it appears again.
This 20+ year Quicken user has already tried to Validate and I recently moved my file out of OneDrive.
I suspect it has something to do with the "employer match" field as the increasing amount appears to be similar to that amount each time.