Hello, everyone. I want to apologize in advance for my english, I'm not a native speaker.

Here is my problem:
I tried to repeat this cool tutorial with fly-apart animation based on cloth simulation:
https://youtu.be/yYh4y_j-l2Y [youtu.be]
and as long as I repeat it thoroughly, step by step, I got very nice result. But then I wanted to add some improvements to my scheme, like spreading pintoanimation attribute over the body from some areas (with some constant areas still pined to animation) - instead of simple adding points to “animated” group by bounding box. And this time I've got a problem, that you can see in the attached images. Some points of my cloth-geometry is somehow remain pin to some points in space.
Please, tell me, why this is happening and what did I do wrong? I've tried to increase number of substeps of the simulation and it's accuracy, but it didn't get better.

cant open it i think the alembic file is missing…

patar
cant open it i think the alembic file is missing…

it's here:
https://yadi.sk/d/wr6xxagfvpEBy [yadi.sk]