When creating an NPC and selecting a non-workshop item, upon reloading it will reset to “Steam Workshop” and (may) turn the NPC into a Helena
1 - Place an NPC, select any non-workshop setting (Skeleton)
2 - Reload Condo
3 - See that the NPC has the “Steam Workshop” setting
The NPCs to retain their models settings.
Note: before I reported this, he also turned into the default Female NPC model until I turned him back into a skeleton and reloaded again.
Instance of a Skeleton forcibly converted to a Helena due to this glitch.