This seems to be happening quite frequently, I use both LR on my iPad and phone and LrC on my desktop.
Files seem to lose sync on a regular basis and shots I've had edited a long time ago (could even just be PC-only edits) seem to "reset" and lose my final version on desktop. The only way I've found to recover is if LR on my iPad / phone has a Version history to be able to go back and apply the edited version to replace it having been reverted back to the unedited file.
Any ideas what is causing a large number of files to revert back to their original state only on LrC?
I'm on Windows
LrC V13.1
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