A saved configuration isn't active until you deploy it (promote it) to an environment—either staging or production. Once you promote it, Media Portal lists the configuration under that environment; it may take several minutes to be fully propagated through the CDN network. To do A/B testing with configurations in production, you can enable a second production slot for a service component ID (SCID). Once you enable the second production slot, you can then change the traffic allocation for the slots.
To manage deployment, you must first sign into Media Portal, open the Caching page by navigating to My Services > Caching, and select the access group and SCID containing the configuration you want to deploy, and then, from the “configuration list”, select the configuration you want to promote