Speaking as an employee of a company that has transitioned from AutoCAD to SW, the ONLY advantage I can see is that the new drawings can be stored, handled, and manipulated by the same system they've been using. It also means the drawings can be edited by someone who does not have SW. It also means that once the drawings are in AutoCAD the link to the original 3D model is gone. That's why we decided to create a whole new network folder and file naming convention just for designs done in SW. If a company did not do that they would have no choice but to continue to produce all drawings in AutoCAD. Seems like a HUGE waste of the investment in SW to me.