Updating very old version to latest Traffic Manager version
I need to update a cluster of two Riverbed Traffic Managers from version 9.8r2 to version 20.3. I was told that I need to create new virtual appliances to do this update, updating one appliance at a time, loading a backup from the old LBs into the new LBs, and using the same network parameters as the old ones. However, I am not sure how I will apply the licenses from the old appliances to the new ones, should I download the license files from the support site and load them in the new appliances? Will those licenses work for the new version? Is there any additional work I should do for this update?