After you upgrade a Replication Server and its user databases, you must decide whether to commit to the new Replication Server version level.
You cannot create, alter, and drop replication definitions until you set the Replication Server site version to 1200 or higher.
Committing to the new version level
Set the system version.You do not need to set the system version if it is 1102 or higher.
Set the site version for each upgraded Replication Server to 15.0.
Upgrade routes for which the upgraded Replication Server is the source or destination server, and the site versions of the source and destination servers are at 1500 or higher.
After you upgrade routes, back up the upgraded RSSDs.
Committing to the new version level and upgrading routes are two separate procedures.