Upgrade Cubase AI to Cubase 9 Pro? (UR22mkII)

Hello, if i buy the UR22mkII and get Cubase Ai
can i upgrade to Cubase 9 Pro?

Yes, you can upgrade to Cubase Pro. Cubase AI is basically a $50 off voucher for any other version of Cubase.

Note that Cubase Pro and Cubase Artist currently require an USB eLicenser dongle to work, but this might change in the future.