I have 2 plan files that I would like to combine into 1 using HDPro 17 if possible. On one plan I have a drawing of existing house on lot. On the other I have a garage with living space above. I would like to export the garage drawing to the drawing with the house. It will go to back of lot. I've tried the import export feature and It will place the garage as 2d but will not display in 3d. Is this possible?