[Tharlin]

It's possible there is an issue with the file hashes not matching and the hash not being updated on the second device for some reason. In order to investigate that, I would need a library backup file from each of your devices so I can try to reproduce the issue during the sync. That would be the easiest option. Otherwise I'll have to try to artifically set up a scenario to match what I think might be happening, but that may not be enough if any of my assumptions are wrong. Would you be willing to create and share the backups with mike@zubersoft.com?
Thanks,
Mike

Could you please tell me, if you got the links I send via forum-mail and if you could download the data?

If you had no time to check for the problem yet, it's no problem. Just want to make sure, you got the data to check it.