A nightmare regarding streaming?

With Roon you can export your playlists to either M3U, CSV, or Excel files.  I haven't used the Qobuz app in a long time, so I'm not sure if there's a way to do that from Qobuz.

Just another vote for Physical Media.  I’ve made play lists from files burned to my NAS that have never gone nowhere.  When I tried this with Qobuz I lost a few during my first few weeks

I have used Soundiiz to move playlists between Amazon Music and Qubuzz. It worked great and was very easy.

I never lost my playlists or favorites on my Aurender….here is why another reason to invest in a high quality player that offers a robust proprietary user interface app. Unfortunately, Qobuz is not known for its outstanding customer service. 

baylinor I use the same game plan with Qobuz as my main portal. So far I haven't lost any favorite lists. I recently upgraded to the Eversolo DMP-A8 and was happy to see my favorites list still intact. One thing I avoid as much as possible concerning my digital music collection is using the cloud in any fashion, precisely  to prevent the problem experienced by the OP.