I've been trying to add textures to one of my M4 characters skins. I notice though that sometimes i am losing morphs after a save.

I tried adding a tattoo to the chest area. To do this, i swapped out the diffuse texture for the Torso texture, added the tattoo, then reapplied the torso texture to the chest material zone. But the thing is, the torso texture includes the chest, head, and other material zones. Do i have to re-apply the new torso texture with the tattoo to ALL zones? Right now i'm just adding the torso texture with the chest tattoo to the chest area only, and leaving the old texture in the other material zones. Could this be what is corrupting my morphs?