I made a duplicate of an existing cell (with a easily distinguishable name) and put a few custom NPCs in it. When I launch the game, I can coc into my custom cell, but the NPCs are not there. I tried using detect life to see if maybe they wandered into another room, but nothing. I thought maybe their AI made them leave the cell, so I deleted all their packages and scripts, reloaded the game, and they still aren't there.
If I do player.moveto ID I get an error, but if I do player.placeatme ID 1, they show up and act normally.