STEP-BY-STEP GUIDE TO MIGRATE FSMO ROLES FROM WINDOWS 2003 SERVER TO WINDOWS 2012 R2 SERVER
Followed https://www.rebeladmin.com/2014/11/step-by-step-guide-to-migrate-fsmo-roles-from-windows-2003-server-to-windows-2012-r2-server/ Did not have to to do the Ad PREP Found MS article that stated[…]