Verify that the service you are using the RR pairs was originally created with the version of DevTest that you are currently using.
If not, you will need to import the mar file as a project in the current version of DevTest, and then re-deploy the service back into the VSE. You can do this by
1) Rename the mar file to a zip file
2) Unzip the new marfile.zip to a location that you can open with DevTest.
3) Once unzipped the contents of the zip will be a DevTest project. You can now open the project with DevTest.
4) Go to the service, and then deploy it to your VSE.
At this point, your virtual service will update if new RR pairs are published via the TDM Portal