Originally Posted by
matkusopet
The mobile app does this fairly frequently, as it tends to mix up dates for boarding passes. My last trip to SMF was 2/2 - 2/3, but the mobile boarding passes had my segments 2/1, 2/2, 2/2, 2/3. Refreshing just scrambles them up again. There doesn't seem to be much rhyme or reason for how they're sorted. Guessing it's a related issue.
Might be worth just printing passes from now on, especially with mileage crediting issues popping up here and there on the forum.
I always grab a screen shot so I can check for the magic Pre-3

. In parallel I have it emailed to me just in case. Never seen a mobile BO with the wrong date on it though. It seems like TSA would get all persnickety about that