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: 100,417
If you want original routing credit, call and request it now, stressing that this was an involuntary change because of a delay (that was DL's fault).
In the meantime, be sure to keep all receipts and boarding passes.