In the past, I could check the "Include star alliance flights" box and USairways flights show up as well. But now, I am only seeing UA flights even though I know US runs along the same route (LAX-PHX). Thoughts?

Or do you see any problems with booking through US site with my MP#? It's such a short flight, I don't really care about the upgrade but I want the miles credited to UA. (I do have US silver status, but I have completely switched over.)