Map caches

[OriginalUsername]

Hey,
I need some help here. I'm creating a non-linear custom story, so the player has to pass the same area at least twice. Somewhere you try to interact with a door, but instead of opening it, it falls over. (Basically a normal door, but with the axis turned 90 degrees). If the player leaves the map using a level door and re-enters it, will the door be in the same position? I think it doesn't work that way, and you have to use map caches, but I don't know how to load them when you enter the map again. Could someone explain?