Without doing any research at all beyond reading this post...
Miss Scarlet:
Character Details: the first NPCs I created are listed under Characters, only the last NPC is under NPCs.
Groups: only the last NPC is listed under NPCs, the others are listed under Players.
Character Details: the first NPCs I created are listed under NPCs, only the last NPC is under Characters.
Groups: the last NPC is listed under Players, the first NPCs I created are listed under NPCs.
It seems like the Details match the Groups. Perhaps by changing the Groups you can change the Details?
I shall research this in my own games, but that's my initial impression. Keep in mind that I am tired and in the middle of moving, so if I'm spouting nonsense right now then that's why. I will still look into it, though it may be a day or two before I can get back to you.