Erm, anyone have any idea why an outbound leg of a round trip would no longer be showing in the "Manage Your Flights" section on the VS web site?
There is no simple answer - there could be site maintenance, VS might be changing aircraft types, it could just be a glitch. I once had a flight that I just could not access from the web site - but my seats were all booked and I got what I had originally chosen.
Best bet is to call the Flying Club and ask them to check your seats if you are concerned. Depending on when you are set travel the flight and seat map may re-appear on the manage your booking section.[y]
It shouldn't be anything to worry about