Went into new game plus for a PK run, did a bunch of quests with a friend, coop glitched out and somehow set every single available zone to Survivors (including newfound lost lands which is entirely underwater and I didn't even know it could be assigned). Didn't even give me the city alignment ranks which really sucks.
Save rollback isn't possible because it's set to a point after the glitch seemingly occurred, so it would be effectively useless.
I don't know what caused it but it seems to have been coop related because when my friend left they got the bootlicker trophy (reach faction alignment 7) even though in their game they only went for the PK crossbow and didn't bother with anything else. I, on the other hand, didn't receive the trophy.