I'm trying to import iClone facial expressions in Unity, but I can't manage to do it whatever I try, only body animations get imported. We have all the latest versions of all Reallusion software. Any help? 
Is there any well done tutorial with dos and donts on this topic (Exporting for Unity and Unity configuration)? 

Anyone?

It is only file at a time, but exporting directly from iClone may work better. When you export an FBX from iClone, it includes facial motion. So you can skip the 3DX step.