FlyerTalk Evangelist & Ambassador: China
Join Date: Aug 2005
Location: DEN
Programs: DL DM/MM, UA 1K, AA Exp, HH Dia, WOH Glob, IHG Plat, Marriott Gold, NA EE, Hertz PC
Posts: 17,494
Listed twice, that simply means the SWU is applied. That specifies nothing regarding the priority coding of it.
OP, call DL and ask what the priority code is on the SWU. If it doesn't clear before the airport, check when you get there too. As DM it should be UP2A. Lots of threads on this.