How to find upgradeable flights?
In the old dotcom, you can choose from the menu to show those upgradeable flights and price them.
Now you have the option only to indicate what specific class, not classes for a round trip or multi-trip.
When the lowest available round trip showing S going and H coming back, You can only have that combination (that means you cannot upgrade the going portion), or you would have to choose class H in order to find the upgradeable fare for both ways, and it's most probably not the lowest upgradeable fare.
How do I find W/H, V/H or Q/H fares? If I do two oneway searches, I am certainly losing the benefit of roundtrip combination savings.