This was a general question for ALL software, but I personally have the Product Design Suite, which is a package of Multiple AutoDesk software units.  I have never been prompted to uninstall my previous software versions and typically did not in order to have the original software available for use while I spent time to test the newer versions, setting them up with second-party software that I use.  The process typically took anywhere from 2-3 weeks, up to 2-3 months, depending upon my work load.  I am a small business and typically handle all of my computers and software.  I have never known this to be an issue, for AutoDesk, having done it this way for many, many years…