Originally Posted by
Intheair2night
Is this online online you have to do this? Because I have previously been able to change the second flight of a connecting itinerary by calling without cancelling check in
Yes, the procedure I discussed is the DIY online procedure. I'm guessing when you call, they take care of unchecking in, then re-checking in for you. The folks on the Mosaic support line are generally quite good if you dont feel comfortable with the online mechanism.