Don't the T&C specifically state that if you cancel, you don't get the bonus miles???
Anyone, successfully bought a ticket, canceled it and still got the bonus miles???
Bonus miles are awarded 1-2 weeks after completion of travel.
Bonus is calculated at the time of Multiplier purchase and is not affected by changes to your itinerary, however miles are forfeited if you cancel or otherwise don’t complete your reservation.
http://www.usairways.com/en-US/divid...ultiplier.html