Mo,
Try saving the model out of the 3D window. I did this recently to send to the Structural Eng. showing the steel roof framing and it came into AutoCAD in 3D.
Cheers,
Gerald Hoffman
“The simplification of anything is always sensational” GKC
Archicad 4.55 - 27-5030 USA
2019 MacBook Pro (64GB w/ AMD Radeon Pro 5600M GPU)