Using Motion 4.
I have a stick figure, the mouth drawn with a bezier tool.
I want the mouth to morph from a fearful look to a smile as it travels along a motion path.
The mouth and the figure are separate.
I tried setting keyframes for different stages of the mouth shape along the path, but when I went back to the first frame and ran it, it would only stay in whatever shape I put it at any particular point.