Thanks for getting back to me here @hstan!
It seems the desktop app hasn't been syncing the edits to the files, can you let me know what the current sync status of your desktop app is showing?
Just to note, once the file syncs with your account online, you will only have the initial version and the most recent version saved in the version history.
If you need to restore a previous version, since they weren't saved to Dropbox, you'll need to look into restoring the previous version through the application used to edit the files.
I hope this helps, let me know if you have any questions!
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