Following up in @rwiesmann‘s post. This can be done. If you wait 30 or so days you can then reach out to Meraki support to migrate your license from Enterprise to Advanced. You’ll lose approx half of your license term however as the Advanced license is more expensive.
Darren OConnor | doconnor@resalire.co.uk
https://www.linkedin.com/in/darrenoconnor/
I'm not an employee of Cisco/Meraki. My posts are based on Meraki best practice and what has worked for me in the field.