Originally Posted by aEWRflyerUA

Seems like I made a mistake somewhere, checked in online yesterday for my flight to ORD today and printed the boarding pass and it scanned fine at the gate so assumed everything was good to go. Now my itinerary returning to EWR Mon shows as cancelled so system must think I never took the flight today. Sounds like system must have wanted me to check in again with the new itinerary number before I flew but allowed the old boarding pass to be valid. On hold trying to get it fixed.