Yes. even if you retained the installers, it is easiest to let BandLab Assistant do the initial installation and activation. It is possible to retain installers but it is not as easy as it was prior to 2018-11. Here is an explanation of the current CbB update process. I too keep hot copies of prior versions. Started doing this when SONAR Platinum was released. In fact, I wrote a simple front end to let me switch between versions called Cakewalk Launchpad. The tool is available on my Go
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