Light build large apartment Archviz issue

Hello, everyone. So I’m having an issue and I hope I would have you takes on it:
I’m currently making an Archviz project containing a 3 floor apartment, due to the scale of the loft I decided with the help of various forums to split my loft into rooms each room in its own level to reduce build time that way I can build each level separately:

  • 1: when I build the rooms and then unhide the others the lighting need to be build message is still there.
  • 2 : and most importantly how to affect the correct lighting on the doors in between rooms like the images below? the door is movable so I can’t get accurate lighting that match the wall around it.

I would greatly appreciate any help from you guys.

screenshots:

Imgur
Imgur