We have ~100 PC's with the Click to Run edition of Office 365 Pro Plus installed (licensed per user).
We're about to transition all staff to Microsoft 365 Business Premium Edition.
While testing the first few users (with a new Business Premium license attached), even though the Office Pro Plus installation doesn't complain via the GUI, if I check the Office license status using "cscript ospp.vbs /dstatus" (as per the attached screen shot), it states it is in a 'Grace Period'.
While I understand the user can change the applied license manually using the "change license" button in Office (see attached), what happens if they fail to initiate this? What happens when the grace period expires?
What's the easiest way to transition from one CLick to Run (C2R) edition of office, to another edition of click to run that doesn't rely on the user?
At the moment, my R&D suggests the only way is to uninstall the old C2R installation and deploy the new C2R installation, using a GPO startup script.
The reason I need to force this change is so the Microsoft 365 Business Premium edition will apply, so the PC can be adopted into Intune/Endpoint Portal etc...

Am I missing something?
Thank you in advance for your help,
Jason.