I’m working on a custom character. It follows the R15 scheme. The attachments are also set up
But I want to add bones for fingers and mouth. So, I’ll have to import this character as “Custom”, not as R15
When I import this character as R15 is works correctly. The caging works absolutely correctly too
But when I try importing the same character as custom, layered clothing completely doesn’t work
It shows that the mesh has “Wrap Target”. But when I try putting layered clothing on it, it doesn’t apply
Roblox Studio hierarchy, when I import as Custom Character (doesn’t work):
Roblox Studio hierarchy, when I import as R15 (works correctly):
Blender hierachy:
I tried importing Outer Cage and Inner Cage. I also tried importing only OuterCage (as R15 it works correctly, even without Inner Cage)
Let me know if you need any more information, I’d gladly provide it! 
Thank you in advance! ^^