That's a fine question. You may need to contact Cakewalk Technical Support for an answer for that.
You might also be able to get an answer on that over the weekend, if you were to send a private message to a couple of the Cakewalk folks who sometimes post here in the forums at odd times.
Typically, you can install a licensed version of Sonar on more than one computer, but your license only allows a SINGLE copy to be used at any one time. So, I have 3 computers, and have Sonar X3 installed on all 3, but I NEVER use more than one computer at a time, so only use a single licensed version at any 1 time, and am therefore in compliance with the licensing terms.
I am truly grateful for Cakewalk allowing me to do as I do with their approach to licensing.
But your situation is potentially different, in that I think those may be entirely different product licenses, although since it is the same 'product' and just a different configuration. The Mac versions may have different registration key values.
I would think that even if the registration codes worked, that it would be a good idea to contact Cakewalk to make sure it is OK to do.
Bob Bone