LE Need help with FormList oddity

[Noggog]

So this is the bug (or feature) that I'm running into in Skyrim/CK:

 

1. 
    
   
2. Create a new FormList
   
3. Add the Cell "DoomstonePineForest01" to the list
   
4. Make a script that loops over that formlist and prints its contents.
   
5. Save
   

 

When I start the game with that setup, the FormList has nothing in it (the Doomstone cell has been removed)

I've tested with other cells and they aren't removed and are printed by the script.. but Doomstone (and maybe others out there) are removed.

 

Any ideas why this could be happening?

Much appreciated!

- Lev