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.
I don't have the Start edition but in the full version we "Save As" and change the file type to the older version.
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
It is impossible to do it simple way, there is no "Save as SE2016" command. Easiest way is to open project in version ARCHICAD 20 and save it to v19.
Best Rafał //Archicad since 4.1 version //MacBook Pro Retina 2019/2.4 GHz/Intel Core i9/32GB RAM/Radeon Pro 5500M 4GB/macOS 13.6 //Razer Intel i9/2.5GHz/32GB/Nvidia RTX 3080/Windows 11 Pro //ArchiCAD 28/Twinmotion 2024