On one plan I have an existing house with terrain to view in 3D. On a second plan I have a new garage/studio, separate building, to also view in 3D. Is there a way to combine these plans into one to view together in 3D. I have tried copying the plan and placed it on the terrain of the existing, but in 3D, only the first floor shows, no second floor or roof. Any suggestions? I have searched the forum, but cannot find an answer as yet. Thanks in advance for your thoughts.