ipod touch b&o usb playlists

I have a 19 with B&O sound. I've got a 64g 5th Gen iPod touch that has about 48g of music on it. It sees all 12K plus songs and all artists but it only sees about half of my playlists. I've re-synced multiple times and still no luck. I have it connected by USB in the console. Is there a cap on...