The system won't start the migration until you complete the pre-migration items in "Checklist for Migration to RDN Synchronization".
One other thing to check, if you look at "Shared Forms Configuration", the top of the form will tell you if you're using OpsManager or RDN Synch mode. If you're not running in a clustered environment, none of this may even matter. Easiest way to tell that is if "Cluster Element Assignment" contains no data, then that node is not in a cluster.