Cubase upgrade delete old version?

Can I uninstall old versions of Cubase? I’ve upgraded from Artist 9.5 to 11 Pro. All my old cpr projects appear in both instances but my Waves plugins keep disappearing and needing reactivation in my Pro 11. maybe because they are located on both CB instances?

You can uninstall your old Cubase, but I seriously doubt that’s your problem with Waves. The best place to start with Waves issues is Waves Central under Settings in the Maintenance section. Try running Repair and Fix Permissions.