How to Cas Mesh Import to Objects?

henlo my friend salvatorest

first this is the wrong thread for your question which is no problem but probably the reason for no answers to your question yet
questions like that are better posted in the "creator help" thread 


but now on to it:

I assume it might be a problem with the cut numbers 
you can't just import (replace) a random mesh 

the mesh you trying to import has to meet the benefits of the mesh you're trying to replace 

in your case this means:

the exo mesh has two meshes - mesh 1 and 2 
mesh 1 is the shoes and mesh 2 is the body suit 

mesh 1 has the cut number 1 and mesh 2 has cut number 0


and the iron man mesh has to be exactly like this