AIR Replication via specific media server

Hi

At a client we have a large AIR environment and some DB's that are deployed as media servers. When our AIR SLP's do replications between the various DataDomains, it seems to pick a random Media server. in the past we use to use the Media Server override to lock down Media servers. So that the Media server that did the backup would do the restore. Is there anything like that, that we can do with air to ensure the SLP uses a specific media server, or preferably the media server that backed up the date.