So I made this simple model in blender, made up of four meshes. I then created vertex groups for these meshes, added bones and named everything correctly. After that I added some Armature Modifiers to the meshes, and set in those properties(object,vertex group). After this, I tried to move one of the boes in POSE mode and everything work like it should. So I clicked APPLY on the modifiers, and after that, bones stop to deform the mesh as I move them. Whats wrong? How can I fix this?