Going from DEMO to Active license (Stand Alone)

What is the procedure to go from a trial version license key to an active key?

I just got my active key, went to the customer portal and signed up -

but I'm still on my trial license... also - tried the transfer and the activate license options...

to no avail as it brings up the trial in the box to choose which to activate?

Do I need to uninstall/reinstall just to change the license number?

Thanks -

SolidworksAdministration