Only like HALF of my playlists are transferring! gahhhh

It's weird because if I search some of the bands it's not transferring, they are actually in Spotify! But they aren't being added when the playlist gets pulled over from Rdio... Some of my playlists have like 500 songs. And only like half are making the transition. Such a bummer. I need these songs for study because I'm a musician. Damn. I've spent years building this collection.
Pandora AND Rdio can eat a turd.