Change from subscription license to serial (ETLA) license?

We have a system that has Adobe CC originally installed via a user "subscription" I set up in aedash and would now like to repurpose it as a shared, lab-type workstation under our ETLA (serial number) license. This is a Mac. I uninstalled the CC Desktop App, ran a script to use the prtk to un-license it, removed the OOBE folder and ran the serialization script I built with the Creative Cloud Packager. When I launched a CC application, I got the message that I needed to register my "trial version."

Is there any way I can simply convert the license without having to uninstall and reinstall all the software via CC cleaner? This workstation gets a lot of use (as does my time) and I'd like to find the quickest fix I can.

Thanks!