If you have a primary Replication Server version 12.1 or earlier that you plan to upgrade to version 15.2, and you have a replicate Replication Server that has already been upgraded to version 15.2, use the Upgrade Route option in Replication Manager instead of the rs_fast_route_upgrade stored procedure to upgrade the related route to the replicate Replication Server.
Upgrading the route version in Replication Manager
In Replication Manager, right-click the Replication Server object containing the route to be upgraded.
Select Upgrade Route.
Select the route to upgrade.
Select Upgrade.
Between the site version of your primary Replication Server and the site version of your replicate Replication Server, a route version should reflect the lower value. For example, if the site version of your primary Replication Server is 12.1 and the site version of your replicate Replication Server is 12.0, the route version should be 1200.
However, the version of rs_fast_route_upgrade provided in Replication Server version 12.1 and earlier erroneously sets the route version to the higher value. Therefore, the earlier version of rs_fast_route_upgrade automatically upgrades the route version to 1520 even if your primary Replication Server has not been upgraded to version 15.2.
If such behavior applies to your replication system and you are upgrading to Replication Server version 15.2, the upgrade script stops and notifies you to fix the route version before upgrading to version 15.2.
