This problem has been bugging me for months. Finally, I just had a huge brainstorm on how to fix it! So here's a quick tutorial on what I did. I'll use my Link character as an example, with a newly created head attached to Mike 2's body. But this technique should work for any figure, and any body part! THE PROBLEM If you want to give a new head to an old body, you obviously need to attach the two together. The most obvious way to do this is to take the bottom points of the new head, and weld them to the top points of the old neck. Therein lies the problem. When you select, say, Point #7 (these numbers are just examples), and weld it to Point #20, you'd expect Point 7 to vanish and "become part of" Point 20. But that's not what really happens. Actually, a whole new point, Point 35, is created to replace BOTH original points. Thus, the point order (that is, the numbers assigned to the respective points) is screwed up. And so are the character's morph targets, since those depend on the points being in a specific order, which has now been changed. Not good. BUT! What if you didn't do anything to the points at all? What if you joined the two geometries (new head and old neck) without changing any points at all?? Here is a quick tutorial on how to do just that!