Question: Are your morphs set to Post-Transform?

Pre-Transform means a morph will be applied before any other transformation (like bending body parts etc). Post-Transform means the morph will be applied after those. I recently had issues with this because I had a morph to fit a LF necklace to LH, and when I applied it, the necklace chain links would disconnect from each other at the body part limits - it was because the morph was set to Post-Transform so it was applying to each body part separately AFTER the body part was bent. I set it to Pre-Transform and problem solved.

It feels to me like the same thing would happen to morphs in Dynamic clothing. If you don't have any body shape altering morph in a dynamic clothing, and simulate the dynamics from unmorphed to morphed in your animation, it'll stretch and move to follow the changing shape. So if you have a morph set to be Post-Transform, it'll consider this change to happen after the simulation, effectively doubling down the shape. Having it set to Pre-Transform should, theoretically, mean that it will consider this morph to already be there while it calculates those deformations.

I remember when I was trying to use the morph tool to make a morph to fix some pokethroughs and ugliness in a simulated clothing piece - as soon as I clicked the clothing to morph it, it was un-simulating. I later discovered that, when creating the morph, it had the "Apply Pre-Transformed" checkbox ticked in the window that asks you for the new morph's name. Ticking it off before creating the new morph allowed me to do this. And that's why we have the option for Pre- and Post-Transforms, annoying and confusing but they're necessary...

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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.