Switch to new jellyfin-server. What gets transferred?

Support
1

Issue description:

I have an old jellyfin-server and a new one. I want to switch to the new one, which has the same songs in the same folders. I have a lot of (intelligent) playlists in the symphonium app, as well as many stats like times played and have used song-rating for years.

I assume (and after first test it seems like it) that I loose the times-played stat and the song-ratings when switching, as they are tied to the songs on the old server.

How are the different stats tied to the songs? Is there a song-ID somehow or is it tied to the path or sth else?
What of my local symphonium-settings and -stats are going to be transferred to the new server?
Is there a possibilty to somehow bulk-edit the backup file to bulk-transfer the song-ratings to the new server?

Maybe someone has done such a server-switch before? I havent found any forum-post about this unfortunately.

Additional information:

I am interested in how it works on the backend, if I understand it better, I may be able to find a solution.
I still have access to the old server and can connect to it with symphonium.

I found: How star rating works (server, client, file) and Restore Local Favorites but did not find said json. I assume this is old news, as the backu-system got reworked?

Media provider:

Jellyfin

2

You either backup and tweak Symfonium data or do it on the server.

In both case not really something I can assist with.

3

I’d like to try editing the backup/.json. Two questions:

  1. How can I edit the .symfbkpz file doesnt seem to be a textfile, with what program can I edit it?

  2. And how/where in the app can I generate/download the .json file?

That should be all I need, thanks!

Edit: just found out, that I can unzip the .symfbkpz file and now I see several .json files! I think I found the relevant data.

Edit: After pocking around it seems, that you would need to change several parameters per song, not only the path, but also an “external ID” as well as others probably.

I will now sleep over it and then probably bite into the sour apple and loose all of my song-rating-progress.