All my masks have moved themselves, ALL OF THEM

Hello!

Im working on a transition through a rock holl that contains a lot of masks, the transition is 10 seconds long but I split it into 1 second chunks because as the hole shrinks the mask points get too close together.

I just opened it, to find that every single one of the masks has shifted over all on its own, so hours and hours of point placement is now all wrong.

Thinking I must have changed something before the last save and not noticed, I went into my autosaves to find the previous version, but it has exactly the same issue. I went back to the previous day, and the previous week to find every single file is different from how it was when I last worked on it, so Im assuming something must have been changed in an update that would have broken all my masks?

Is there any way to restore these masks to their correct version or is that just hundreds of hours work lost?

Picture attached so you can see where the mask is and where it should be.

Thanks!

David