Transitioning JellyFin from one system to another

[Disentomb]

It's all coming to an end, thank you to all the contributors to the previous posts.

I'm wondering if there's any way I can preserve anything from my Windows based server into the Ubuntu based server I'll be setting up.
I've seen the migration script from the documentation but it hasn't been updated in a year and haven't heard of anyone using it so I'm just curious about any other's experiences or good advice before I install on the new server and get the ball rolling.

Thanks.