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 - 27-6000 USA
2019 MacBook Pro-macOS 15.0 (64GB w/ AMD Radeon Pro 5600M GPU)