How do I make a displacement modifier affect multiple objects? [![enter image description here][1]][1][![enter image description here][1]][1]I've ripped this model out of a game, a character that is made up of multiple objects . I want to 3d print it , but since its from a game it doesn't have detail in the mesh , but in a displacement map , but since I want to 3d print it the detail needs to be in the mesh . now the legs , body and arms are different objects but there uv wrapped on one texture.
The displacement map is just one image for arms , legs and body , but I need to have the displacement modifier treat arms , legs and body as one object . Why I cant just join the objects together using Ctrl + J ?
because the displacement map is made for the way that the objects are uv wrapped and joining them together would destroy the uv wrapp and thus make the displacement map useless.

Update:https:
I put the original nrm file in as well
The different parts of the body have different UV-Maps.
As you can see in this image, when I join them, I get 3 UV-Maps

(At the rights side)
You can solve this problem, when you Name them the same before mergin.
Then you get this result: