Existing reservations that have been recently changed appear on the front page of the new site as their old itinerary. But older changes are reflected. For example, I had a flight I booked earlier this year EWR-HOU-CLL-HOU-EWR. Then a few months ago, I changed it to SNA-HOU-CLL-HOU-TUS. Then a few weeks ago, I changed it to EWR-HOU-EWR. (Don't ask! lolz.) It now appears on the new site front page as "SNA to CLL", even though neither of those airports is part of the current reservation. (When I click on "Manage" for that reservation from the front page, it takes me to the same back-end reservation page as the old site, which has the correct current reservation.)