I read something in the authorization process that gave rise to a question: "That once authorized on one computer it could not be authorized on any other computer, which is understandable, but what happens if we purchase a new computer, to run the plugins our old computers no longer have the power to operate.... how do we get our Sonar authorized on our new computer -- please don't tell me I have to buy another complete software license, because I've updated my hardware....?" 
 
Thanks
KJBoies

There is no problem installing your old software on a new machine. Cakewalk does not restrict installations to a single machine.

Even brands like Native Instruments and IK make it pretty easy. I've done this a few times.