AH,... I see.
That’s a much tougher question,. unless you use the Iconic shapes, and start out with V4, then change the slider back to make it genesis.
Genesis and V4 are completely different models with different polygon count and different bones.
so,.. it’s like asking how do I make this tree into a building, or vice-versa.
Until we know exactly what the OP is wanting to do, or the effect they’re trying to create, it’s an impossible question to answer correctly
EG, you could take both models into a modeller and adjust V4 until it looks more like Genesis, then re-rig it etc…
but,.. it’s long way round for a short-cut.