Version 5.0 was controversial. It changed the menu layout drastically, moving "Sewing" to a dedicated window. While power users complained, it made the software accessible to beginners coming from Marvelous Designer.
You cannot save a file to an older version. If you open a project in CLO 7.4 and save it, you cannot open it in CLO 6.0. The simulation cache is not backward compatible. clo3d version
Before diving into version history, let’s address the core question: Why should a professional care about which CLO3D version they are running? Version 5