I had taken the outbound portion of my international award ticket and since have had dates changed on the return perksaver resulting in a 30K miles difference on 12/31. It would not allow me to make the change online, saying to call the nwa phone line which I did. The dates on the reservation have changed online right away, but the ticket has not been reissued yet and as a result the 30K miles have yet to be redosited in my account. How long does this usually take?