Ive never found a straight answer to this question; i have a logic platinum windows version 5.0 with an authorized dongle. Ive bought the upgrade to logic 9, which will, according to the documentation, accept the dongle for authorization. What isnt clear is whether it will accept the windows license to upgrade to 9. Ive searched everywhere for an answer..... If i break the seal on the upgrade and it doesnt work, Im stuck with it... Anyone have a definitive answer for me? Thanks!