What kind of sync is applied to M3Us?

[Pfeil]

I read on the feature overview: "Full support for playlists, with option to auto-import .m3u files and to keep them in sync"

I tried this, but it seems not to "keep them in sync" (which I read as 2-way-sync) but rather auto-import and auto-update (or 1-way-"sync" from playlist to navidrome). It also overrides changes I may have made on the server (overrides on file update). I wonder which I am holding wrong: navidrome or its manual? Is this intended?

Background/Goal: I sync this folder between devices and would like to have my playlist also in the form of a file in order to use it in other devices. This also means I need actually relative paths in my playlists (which is an issue with probably all media players).

If this is not a bug, the only workaround I see is to export the playlist manually (can I automate this?) in order to "sync back" and have a cron job to convert paths back to relative. Is there another one?