I have solved the problem by doin' something quite radical. I have completely removed all default clothing and the default FX layer, added all the dressing sets I needed and used VRCFury + MMD fix from VRCFury to create an FX "on the fly". This solved the back to default clothes (or worse the naked Chalo dance).
It's an FX layer problem, and Mofuaki never fixed it.
https://x.com/_ThreeNine999/status/1745826739836911961/video/1
Translation:
Often there are some parts inquiries, leaving a post!
The external body used Maya body, and the machine body in the inside used this model.
https://myjunkyard.booth.pm/items/3924895
Hair or additional parts are also very attractive models.
Hand used Gelas' hand
https://augmented-dolls.booth.pm/items/4918616
You could also look into this:
https://milpix.booth.pm/items/5763199
