If you regroup things, you'll break every single morph on her.

You could just tweak the weight mapping without any regrouping at all. If necessary, the Joint Editor has a button to let you add more groups to the bend influence without needing to regroup anything.

Or you could go the easy but messy way of just creating a JCM :)

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Feel free to call me Ohki!

Poser Pro 11, Poser 12 and Poser 13, Windows 10, Superfly junkie. My units are milimeters.

Persephone (the computer): AMD Ryzen 9 5900x, RTX 3070 GPU, 96gb ram.