SOLVED: Playlist disappear right after library scan

[Rubén Navarro López]

I installed on a VM jellyfin server again, and tried to add a media to a playlist, but in this case, it isn't removed after scan. So probably, its something related to my JF installation.

Any recommendations to export all my config to a fresh installation? (users, library, .nfo, content...) or isn't recommended for this case?