So I started rigging the new units mesh, but as you can see on the screenshot, it's not really covincing. The two guys on the right are new units they are taller all the other unit except the fat one are the new units meshes, with the old armature, for some reason, it's not the same quality... I made a process to convert new units or any meshes to old armature. Basically go to the new skeletons folder, and import the dae you want in blender. Delete the Armature. Scale it to 0.895. Put the mesh