Balcony Issue

[Amerigo]

I have made a balcony .obj. If it is set to be a door/window, then it connects to the wall, but it's depth is changed to 0"3" when it should remain at 6'. If set to be movable, stairs, or nothing, then it looks right but doesn't connect to the wall.

If someone can take a look, you can download from here .

[Puybaret]

You could import it as a door or window, then place it with magnetism deactivated.
But this won't solve your problem completely because the cutout in the wall will be incorrect.
The easiest way should be to import the elements of your balcony independently from the others.