Hey @Matthias_Luck1 – everything in your post sounds like issues migrating storage, and I’m confident all your edits and library are safely stored in the Roon database, which was designed specifically to attach edits to file signatures, as opposed to specific storage locations.
If edits appear to be missing, it’s almost certainly due to the storage migration and re-configuration steps that were taken after the 1.3 update. We would be happy to look into this and help you recover anything that appears to be missing.
Do you have backups? Whether you do or not, can you start a new thread in #support with these details and screenshots of your storage configuration, and we will take a look?
Thanks!