Animation not importing thumb animation

Hi,
Using a Miximo rig Unity isn't importing thumb animation. The rest of the animation is importing fine.
-I brought the fbx back into maya and verified that the animation does in fact have thumb rotation.
-We tried having the animation create its own rig, and reference our setup files humanoid rig with no luck.
-I've turned off animation compression
-I've verified the setup file humanoid has the correct thumb bones assigned.
-Thumbs are named the same.

Any thoughts on how to fix this?
Thanks.

 

I know what is causing this but don't have a clue how to fix it.

If the rig is set to humanoid the thumbs do not rotate correctly. It tried expanding the thumb constraints to -180/180 but no change. Is the humanoid rig set to not allow the animator to "break" the thumbs? Anyway around this?

 

Got it.
Had to set muscle space to 0/0 rather then -180/180.