(1) I switched to my specialty weapon to pick up and reload some ammo that dropped and I lost the 2 floors I cleared. I did not use it I just switched to it and switched back to my sidearm but it removed the 2 floors I cleared.

(2) I opened up my inventory to see the field proficiency cache and it removed the 2 floors I cleared. i did not switch weapons.

very frustrating bug/glitch

accent - sidearm specialist