Hi, yes you can but..... occasionally people run into issues with file associations when uninstalling the old apps. This does not happen every time, and I've never had that issue here. But the way to avoid them altogether is to uninstall all the apps on a "last in first out basis". Then reinstall the latest.
Ok, that makes sense. I'm looking at my apps and there is a PhotoShop 2015.5 and 2017. Neither have an uninstall option and they aren't in my Creative Cloud. My 2018 version does have an uninstall option. I currently have a 2019 and 2020 version also. Is there a way to cleanly uninstall the 2015.5 and 2017?