I recently got a new Mac and I would like to transfer the Master Collection from my old Windows 10 laptop. I had to use a program called Belarc to find my serial number as I had received the MC several years ago and the box had been long gone. When I enter the serial number into "My Products" to register my product it says that the serial number is already in use while I had only registered it on one computer and had seldom used any of the programs prior aside from photoshop. Would I have to deactive my registration on my old laptop before being able to redownload? If not, how can I redownload all the programs onto my new Mac?