Originally Posted by
halls120
This. One of the key downsides to the new site is that you won't be able to individually select class of service for each leg of a multi leg trip. That function lets you put together a cheaper overall fare, which is of course not in UA's interest.
This was working in the app very recently. Hope it doesn't go away. The downside for me was that when I tried to change things later the system just barfed it up. The app also consistently finds flight options/prices that I can't replicate on the web site.