This issue MAY be related- I move the camera- and various morphs on V4-WM change. I moved the candle and the neck rotated. What changes? Mostly head rotation and expressions- I move it again- and they may change back. Odd.

The only changes were in moving the candle-(which had a light parented to it) and the camera-which had no intentional parenting.

Frustrating as they were long renders- and according to the preview-the neck rotation and expressions were the same for both images!