Would you happen to know if I use the Upgrade Robohelp Classic Project option in RH2022 is there a way to save a copy in Classic as well? I have selected this and the project seems to pull over to RH2022 from Classic 2019 (changing the file type from .xpj to .rhjp) but I do not see a way to still access the project in Classic. The concern is to upgrade a large project, run into issues and lose it. We have projects that are ongoing and have been worked on for several years.

The Upgrade Classic project leaves the Classic project intact - you can always zip a copy of it up just to be extra safe if you'd like.
You should be able to launch the Classic version the same as before and open the Classic project. Did you somehow remove the Classic software version?