Hello, 
After I export my character into Unity i'm running into a few problems. First, the mouth open blendshape is not including the teeth so the lips open but the teeth remain closed no matter what I do.
Another issue is with eye rotation. In the Program i'm using the character in the eyes roll back into the characters head when looking in certain directions. This could be the program i'm using (Flipside Studio) But i'm not sure because it does not happen on Daz or Mixamo characters. 

I would say the biggest issue at this point is the teeth open issue.  
I also noticed the mouth blendshape inside Unity is not as wide as it is inside CC.  So when the character uses lipsync in Unity the mouth does not open as wide as I would like. 

Please help.

I have the exact same issue with the teeth not moving when I open the mouth using the mouth open blend shape.  I was, however able to open the mouth using the jaw bone joint, but that won't help when it comes to using Unity's plug-ins for lip sync that use only blendshapes.  Also, speaking of lip sync... where are the phoneme lip blendshapes?  Those are required for any lip sync and are included in all Daz character, but I don't see them in CC3 character's blendshapes list???  Please help!

I don't think this issue will ever be addressed...I just finally bought the program after my trial expired because there was a really good black friday deal that i couldn't pass up. But i can't do much without these issues being fixed.  

Blend shape face animations have nothing to do with jaw bone animation. You just need to animate face bones in sync with blendshapes. 

But in my case when I import character to Unity everything works but the jaw bone is rotated 90deg around some axis and eyes have some weird angles. It happens not every time but i have hard time fixing it. Most of characters import okay and aone shared animations works with all but this one exception.