Have almost the same issue with a small side note I kept 1.5gb profile and community folder stuff. The issue didn’t happen when updating the Flybywire. After the latest MS/Asobo update all my +/-155gb are gone! All evening I’m downloading it again and it is very slow. Still not finished after 8 hours. I’m not happy with MS and Asobo to put a ground braking sim deleting update into the world !