[ART] Retexturize a Grunt?

[HollowRiku13]

I want to know if possible to re-texturize a grunt, I have already tried with a lot of Entities and it worked, but when I try to make it with a Grunt nothing happens, it remains as before, this is what I did:
1. I copied the files in the folder "servant_grunt" to the desktop.
2. I opened "servant_grunt.dds" and modified the texture.
3. I opened the "Material Editor" and created a new material with the textures of "servant_grunt" located on my desktop and replaced the original.
4. I opened the file "servant_grunt" located on my desktop with the "Model Editor".
5. I changed the material of the Grunt.
6. I sent the files to the "Entities" folder, of course, without modifying the original.
7. I put it in the "Level Editor" and saved the map.
8. I opened my map to try it, but the Grunt had its original texture.

What I am doing wrong? Thanks for your time.