Join Date: Aug 2011
Location: MIA, VIE and DPS
Programs: DL Plat 1MM, AA EXP 3MM, SQ Krisflyer Gold, UA Silver, Marriott LTT, HH Gold
Posts: 1,132
Might be more common than you think. I had this on Delta once - and they gave me a form to sign (affidavit of flight) where I essentially had to sign that I really flew, possibly had to be notarized - can't remember now. Regardless, the fact that they had a ready to go form suggests it does happen a couple of times.