I was attempting make a dungeon, I was pretty far in too....then I had to go so I saved and exited. Now, I came back and loaded up the dungeon again by clicking "Data" then "mydungeonname.esp" and loading from there. I continued editing for a bit, then I wanted to test something, but it wouldn't let me save again under "mydungeonname.esp" so I created another file called "mydungeonnamev2.esp", disabled the original and loaded it up for testing. But alas! Everything went missing except for object I placed after I saved. Does anyone know how to properly save, and continue editing a mod without this happening? Thank you. If you have any questions feel free to ask, I know I can svck at explaining things.