Thank you Shane.
Most of my files have the same name “name_of_shootingplace_date” with a numerical increase (001,002,003) etc. It would be very hard to distinguish them with another method of naming.
I did hit save, unfortunatelly, and after that it all started. I have multiple backups of the projects and autosaves and backups for the autosaves. I have opened several of them but nothing changes.
It seems that whatever verion of the saved,autosaved, backedup version I open, they are all linked improperly to my scratch disk material.
Is this undoable?