Live2D parameters go broken for no reason?

Hello !

This has happened to me twice now, that after closing, respectively after exporting the model, strangely set parameters change or get lost.

First, I had it with the hair of my model: I set the parameters for physics, saved and closed the program. The next day I wanted to continue working and found that my parameters had changed. The movements were much stronger / more extensive than I had actually set. This was tolerable, but really annoyed me because I just didn't know where it suddenly came from. I changed nothing in the physics settings, like the scale or something.

But NOW I have the problem that other parameters just deleted(?), respectively the settings disappeared after I exported the model. I have the whole movement of the head set (X + Y, as well as the diagonals) and all settings for the head diagonals (like face shape, eye positioning, etc.) just dissappeared as I haven't done anything. After the dilemma with the hair, I save very often and am very careful but... Yeah.

Someone an idea what could be the reason for this, so I can avoid this in the future?
(I could not find anyone atm with similar problems...)