NPCs from mods getting removed if mod order was changed
Steps to reproduce:
- Install any mod with an NPC.
- Move the NPC to another cell (for example attack and run away).
- Save game.
- Change mod order (the mod with the NPC should now have another index)
- Load game. The NPC is missed. Log contains a message like
Warning: Dropping moved ref test_npc for 1 (moved object no longer exists)
Changed load order is handled here, but this functionality is broken.