[Plugin: W3 Total Cache] w3 Total Cache and Akamai format (rackcdn.com)

I am using w3 total cache to managed the content between the cdn and wordpress. Previously when I created a container the CDN url would automatically be fill when the container was created. As seen in the attachment of a screen shot from w3 total cach the replace host name with remains blank. Further more from what I can see is that the old non Akamai format (.cloudfiles.rackspacecloud.com) i what w3 super cache is looking for and what is been created is shown in the second screen shot .r49.cf2.rackcdn.com. Is it possible to create the containers using the old format,