I called MR and chose US Airways as my 2012 airline of choice January 1. On January 4, I booked a US Airways award ticket. The $50 US Airways award processing fee was reimbursed on January 7.
So I had $150 left. On January 8, I called MR again and switched my 2012 airline to Southwest. On January 9, I bought 3 $50 Southwest gift certificates in a single transaction. Today that $150 charge was reimbursed.