We have a client who is splitting their businesses and needs access to the same GP DB and has agreed to take a copy of the GP Database. Currently they are on GP 2013. I have a test migration server and testing this right now. I restored GP2013, applied their patch and upgraded to GP 2016. Entered the registration numbers with the new microsoft license account but I'm running into errors. The DB is linked to a different microsoft license account and I need to upgrade it and change it. What is the best way to do this? Thank you in advance.