I'm slowly trying to learn how to use GECK and I know how to make my own vault pretty much. I just ran into a issue.

I edited outside Megaton Wasteland called MegatonMaingate.

Testing it I removed the "Bathtub" that is there then saved it as the plugin .esp file.

When I go into the game the Bathtub is still there.

How do I do it so the Bathtub or anything else I remove from around the Wasteland vanishes?

or I place a Mutant and it appears there.

I have no idea on what to do