I've been looking on ANA tool for C award on these routes to BKK which I believe accommodate you on the old F cabin, but can only find some orange buttons in "economy" so far - no C has come up. I wondered if this has anything to do with the 3-tier classification (C, Y+, Y) on these routes which are not conventional (i.e., F, C, Y)? How should I interpret the ANA results where it only shows there are two classes available?