I don't know if this is "website" related, but I'll stick it here for a try.
Checking my milage plan today, one leg of a Feb flight suddenly disappeared. Is this something that happens and will correct itself? I hope so, I don't know if I have the BP anymore because it was a flight last month and it had already posted to my account.
If needed, I'll have to explain on the phone that i DID NOT fly from SJC to SEA on Friday, walk home to SJC on Sunday, then fly back to SEA on Friday - but I'd rather not. I prefer to fly rather than walk every week back and forth, and I hope that the system will figure that out and give me my flight back.