A FlyerTalk Posting Legend
Join Date: Sep 2009
Location: Minneapolis: DL DM charter 2.3MM
Programs: A3*Gold, SPG Plat, HyattDiamond, MarriottPP, LHW exAccess, ICI, Raffles Amb, NW PE MM, TWA Gold MM
Posts: 102,617
I suspect that the breakage rate is higher on credits that must be found by looking up a ticket number versus those that appear as eCredits in a FF account. It's too easy to forget the credit attached to a ticket number and it can require searching to find the old ticket number.