Updating to latest version

If others are going to use a lower version then please keep a copy of the file else there should not be any problem in opening the file. But please note that once you saved it in the latest/higher version then there is no direct way to open it in the lower version. You will have to covert it to parasolid/step/iges, etc to be able to open in lower version with file opening as dumb solid/surface bodies.