Here is a brief tutorial transferring a full body shape from one CC avatar to another, even if the source avatar mesh was invalidated for importing as CC slider (such as changed poly count).

It also partially answers the question asked a while ago by Mtakerkart here: https://forum.reallusion.com/FindPost470593.aspx
That is arranging high and low poly avatars for normal maps burning/baking.



Note: There is also a possibility to transfer body shape which includes eyes, teeth and tongue (not shown in the video).
For that however you'd need to uniformly tweak UV for both - source and target characters and make sure there is no overlapping.
Like shown in this thread: https://forum.reallusion.com/FindPost493608.aspx

Thats a great tool and the videos are very helpful for beginner CC users that are bound to make several import/export mistakes! 

Thank you 4u2ges !!
Very helpfull. I'll search for an easy bake normal tutorial ;)

No problem, I am sure it would work out for you guys. :)

@4u2ges,
Thanks for the Tutorial,
Great👍👍
Greetings rosuckmedia

You are welcome, thanks! :)

Here is a CC3+ Neutral Base template Blender project for transferring a full body (including tongue, eyes and teeth): https://drive.google.com/file/d/1US7IA3DXi_He094LwJq2j9pd4JZUWagz/view?usp=sharing
NOTE: This is mostly intended to character content developers audience. You probably already understand why you might want to transfer the shape of newly developed character to the base and bring it back to CC ;):)

The advantage of using a full transfer is, that you do not have to worry about adjusting tongue, eyes and teeth bones/location when morph is applied back to Neutral base in CC.

The base in template Blender project has already UV spread around UDIM space for tongue, eyes and teeth.
Bring your character into the project.
Spread UV islands across UDIM space for your character exactly the same way as a base (see screenshot below)
Transfer mesh from your character to the base.
Export and apply as a Morph Slider to the CC3+ Neutral base in CC.
Note: You'd need to use an OBJ key for base character. So you might want to export the base to OBJ  in CC to generate that key first.

76% of original size (was 659x19) - Click to enlarge

Welcome to the forum mau.memoli!
And thanks a lot for the great plugin.
It is an invaluable tool in my workflows