I've duplicated an interior cell and made a load of changes. The one problem I have is that the cell, though the location in the info tab has been changed to a new location, in the cell view it still has the original location. As a result of this, the NPCs I've placed there are linked to the original cell location rather than the new one. They are all in the new location in-game, but for the quest line I've created, the new map marker shows up just fine, but the pointer points to the original cell location instead. This only changes once inside, so that the marker is pointing to the actual NPC instead of the location.
I really hope this makes sense, and I really *really* hope someone can help me fix this!