16.1.5 The following conditions apply to the use of Flight Upgrades:
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(e) Points and Status Credits will be earned only for the class of service that has been purchased, rather than the upgraded class of travel;
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If I upgrade a say MEL/SYD leg with FF points, do i earn J class SC on that sector, SC from my original booking class, or no SC at all?
Sometimes upgrades don't post properly (e.g., they post as if they were a redemption), but a quick e-mail or phone call to the QFF service centre fixes that.