Retargeting skeleton3D animations with relative transforms in 4.3

Godot Version

4.3

Question

My source skeleton has differing proportions from my target skeleton. I set up my retargeting using the bonemap+skeletonprofile way. When playing an animation on the target skeleton, the bones will snap to the absolute transforms of the animation rather than using relative transforms, which breaks and stretches the model unnaturally. It does not not appear that I have missed a step, but I could be wrong. Could someone please explain how retargeting animation works in godot 4.3 when the skeletons have different proportions but otherwise share the same bone names and hierarchy? For example one skeleton being shorter than the other, and so on.