About model and data exchange with 3rd party solutions: Revit, Solibri, dRofus, Bluebeam, structural analysis solutions, and IFC, BCF and DXF/DWG-based exchange, etc.
Also check the active Renovation Filter in Archicad.
Maybe you are using one that is 'hiding' elements?
Make sure you have one set that is 'showing' everything.
Barry.
One of the forum moderators. Versions 6.5 to 27 i7-10700 @ 2.9Ghz, 32GB ram, GeForce RTX 2060 (6GB), Windows 10 Lenovo Thinkpad - i7-1270P 2.20 GHz, 32GB RAM, Nvidia T550, Windows 11
Thank you both!
We discovered that she was drafting 2D line work, and the setting to export 2D was buried deep within the Revit settings. All fixed up!