I have a full retail version of Logic Pro7.1 and the Logic Pro7.2 upgrade and content discs. I have just purchased Logicstudio 8 upgrade and noticed that this does not now require the xs key/dongle. Is it possible to sell one version of Logic Pro7 that i have with the xs key and still be able to use the spare disc set with the Logicstudio 8 Upgrade? I would like to know if this is legal and which disc set to keep. Thanks.