Hi @jonas thank you for the answer.
I don't know if that was reason for the issue but after a Kernel update to Linux 5.14.2-arch1-2 and installing qt-gstreamer-1.2.0-4 clementine/strawberry are working as expected.
Select Podcasts in the button bar. Select the “Sync podcasts onto [device name]” checkbox to turn on syncing of your podcasts. With the checkbox selected, syncing is set to transfer all your podcasts (musical podcast) to your device.
The other option is to import the data to the new DB based on artist/album/title, you can use parts of the guide I made here, but you have to modify the query to import only playcounts and rating from the other DB.
The settings are stored in the registry under
There is also a database where the playlists, etc is stored, it's under