Adding to my previous post just above as I was experiencing the full issue:
Dart traps are also empty now (dart ammo disappeared)
Motors disappeared from the generators.
Timed relay lost their configuration (back to default)
Motion detectors are also reset to factory settings (so my blades are now targeting ME instead of the Z... Noice noice noice.)
Trigger plates config are also reset.
Basically anything electrical is now reset to factory settings & empty.
I lost a few hours (real ones) tonight fixing all the issues in my base. Hopefully this won't happen again because it's not pleasant at all to redo something I built recently.
Cheers!