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.
Have used the DWG "for further editing" translator for years, but now have been told by others that they can't open my files. Is it a problem between old autocad versions and AC14? Is there something I need to change in my setup?
Aside from exporting to the correct Autocad version, The Keep Pen Index Number (KPIN) translator is the only one allowing for consistent round-trips. It is recommended to make your pen sets compatible with the Autocad user's too.
More info here http://archicad-talk.graphisoft.com/viewtopic.php?p=165744#165744 (and subsequent).