Ah, good point. I backed up and I will restore from backup a second time. I'll make a playlist that works, add more tracks to it, but then they no longer display on the iDrive. Another issue is a playlist shows/plays the music from another playlist. So something is off and hopefully restoring again will fix it.
My Current: 2010 Sapphire Black Metallic 335i /Sport/DCT/PDC/Nav/Black Leather/CF Wrapped Interior/Gloss Black Grill/More coming...
My Other: 2006 Audi A4/Quartz Grey/Black Leather/E-Codes/APR tune/19" VRM v708s/FK Silverlines/RS4 Front Sway Bar/S4 Mirrors/Black Grill/Arc Audio-Focal Sound system