Not so sure about this - was it created by MusicBee?
Someone lied, and it wasn't me haha. On a serious note:
No, it doesn't look like a playlist generated by MusicBee on a second look. Oh well, back to square one I suppose.
@FeronStost, I can't suggest more to what has been pointed out by others, but as a last attempt from me:
Please experiment with different playlist folders that don't exist on your phone (e.g Testt\) - MusicBee should report with a red icon that it will create the folders for you.
If it creates the folders and the playlists still don't show up, then the problem is above my pay grade.
The above attempt should be preceded by:
...create test playlists (a mix of static and auto-playlists) using MusicBee... (don't use the ones from iTunes)