I'm trying to create a mod for Fallout New Vegas, and I added an NPC to an existing map that gives you a quest. Then, I went and duplicated the Vault 74 cell, deleted everything, and started making my own Vault. Then, even after I saved, when I quit the program, it deleted the whole cell. This also happened when I closed the program after saving while I was doing the tutorial as well. Is it an issue with the particular cell I duplicated, or is it a problem with the G.E.C.K.? Thanks! - Jake