Importing already modded NUD file 3ds max

HELLO!!!

I’m trying to import a modded fighter to 3ds max to port to another game.
But I can’t seem to be able to do that.
The NUD importer tells me the vertex number is out of bounds or something and won’t import it.

I’m trying to import ALL MIGHT from My Hero Academia to 3ds max

Or do you guys know how to extract it from the 3ds game?
Thanks!

EDIT:
I get this error when importing to 3ds max
Vertex index in face out of range: [1,2,3]