Also, my control points for objects, walls, slabs do not line up with where my wall actually is.
Based on this description it sounds to me like a far away from origin issue. If your ARCHICAD model is situated miles away from origin (0,0,0) then you will run into the issues you have described.
My advice would be to move the model closer to origin which can be achieved by drawing a thick marquee around the entire building, then use the drag command to move the building to a new position.
(You may have to use File>Save and then quit ARCHICAD in order to reset the internal origin point to rectify the issue)