Thanks for the reply. Unfortunately, it doesn't offer me a mixed-cabin itinerary if I try to book MEL-SFO-BOS. Probably because there are not any saver economy award flights for the SFO-BOS leg.
Originally Posted by
mahasamatman
If it says it will waitlist, no. Award and upgrade inventory are separate. The presence of one does not indicate the existence of the other.
If you go this route, book the new tickets before you cancel the old ones just in case something doesn't go through. What happens if you try to book an award MEL-SFO-BOS? If it comes up as a mixed-cabin itinerary, you can waitlist for the front cabin on the SFO-BOS segment for no extra charge.