Similar experience.

Few weeks ago in a morning I booked two WBC award tickets BOS-MSP-NRT-PVG via elite line for the upcoming Christmas holiday season. Everything seemed fine. However, when I checked the reservation on www, I was shocked to realize that NW agent mistakenly arranged us a 27-hour layover in MSP.

I know Minneapolis is a nice city, there is a big MALL. But I don't want to stay there for a night so I called elite line again to fix the problem. Fortunately this occured less than 24 hours before the initial call, or we could get hit by a $50 changing fee???