@zottel You are right. If you add a track from within your Roon library to a playlist, then and only then, it is the library version that gets added. So, if you are still building your library, a thing you can do goes as follows. You make a local copy of a Qobuz playlist. In it will be non-library versions of the tracks. You add them all to your Roon library. You go to My Library > Tracks. You arrange by date added. You select the ones that you have just added from your playlist. You Add them to a new playlist. Here you have your Qobuz playlist with library versions of the tracks in it. After comparing and checking, you can delete the playlist with the non-library versions.
There are two things that make this extra complicated.
(1) If some of the tracks in your Qobuz playlist, were already in your Roon-library before (e.g. because they are also in another playlist you already imported and added to your library), then those tracks will have another “Day added”, so it will be more difficult to find them under My Library > Tracks
(2) Adding a selection of tracks or all of the tracks in a playlist to your library, can only be done one by one. There is a bug (probably) that makes that if you select non-library tracks in a playlist and you go to the three dots in a circle on top, and you then choose “Add to library”… it does not happen. It does not work. Technical support is aware of this possible bug and has passed it on to the team to investigate. Can't add all selected tracks to library
PS: For Tidal users, the procedure is slightly different (and more complex).