Backwards Compability still breaks butt implants

This is how implants look in my current game:

Her butt is 71% implant.

Then I download the latest version, load the save and run BC. Now it looks like this:

With only 42% implant.

Slaves with the most basic implants (not even fillable) stay the same, as far as I can see. But everyone else suffers from this issue. Makes it kinda annoying to update the game when you play as transformation fetishist society.