iTunes 12.5.5.5 playlists not syncing w/ RB 4.3 on Mac OS 10.10.5

I'm running the latest iTunes 12.5.5.5 on a MAC OS 10.10.5 with RB 4.3. Previous to updating, only a portion of my itunes playlists were showing up in RB and even after the updates, the same problem persists with multiple refreshes and even un-clicking the 'share itunes library XML with other applications' button.

NOTE: The playlists that aren't showing up in RB are all those which have a name starting with 1- 
SO, i've tried several tests by duplicating one of those playlists and renaming it without any numbers (similar to the other ones that do show up) and this still does not work. 

ANY SUGGESTIONS WELCOME! 

Thx, 

bonnie