My wife hit 2MM, and we received and burned our first ever and only SWUs on this route for an upcoming trip to Peru. SFO-DFW-LIM and the reverse on return. Only 3 of the 4 legs cleared, with the first SFO-DFW leg wait-listed. Feels like a waste after reading this thread, but we have no other opportunities to use the SWUs this year on better flights before they expire in December.