why i need to export and import model in cc3(3.4 version)?（For u3d）
when i export model with 'mouth open as morph'(its been 'game base'),the rootbone name is 'root'.
but when i export animation only from iclone7 by 3dxchange,the rootbone name changes into 'CC_Base_BoneRoot'
so i cant use the same avatar in u3d,it's really not scientific.
then I googel it,they told me try to ex-import model ,and send to iclone so that bone's name could be same?
I am not sure, because i cant find fbxkey anywhere,so i cant import moldel which is form cc3
the pictures are my export settings,how could i find the fbxkey?(Whatever Naked model or cloth model,I cant find it in their exported folders )
Or is there a better way to solve my problem?



BTW,I have another question..About Iclone7 and 3dxchange,Why I export animation ONLY with 'not include mesh' option,but there is still a lot empty nodes 
(U can see the picture)

Admin has given me a huge great answer:

It will work better to export from CC3 Pipeline or iClone 7, rather than sending it to 3DXchange for export.
CC3 Pipeline FBX export with motions:
https://manual.reallusion.com/Character_Creator_3/ENU/3/Content/Character_Creator_3/3/17_Export/Exporting_FBX_Characters_with_MotionPlus.htm
CC3 Pipeline export motions only:
https://www.youtube.com/watch?v=x5-8oi1alL4&list=PLNV5zSFadPdmyOVE2c3RrOqLZS-KfiEZK&index=42
iClone FBX export:
https://manual.reallusion.com/iClone_7/ENU/Content/iClone_7/Pro_7.4/28_FBX/Exporting_FBX_from_iClone.htm