Thanks Prospero for another great initiative! ^^^

I can however confirm that on the standard fares I have bought I have never had a problem changing the routing (including to completely different origin/destination) as long as the change fee was paid. However, also worth noting that the change had to be within a year of the ticket purchase and not of the travel dates.

Also an important caveat to your advice on POUG is that it is only valid for direct routings. Any connecting routing will not have any upgrade offered (not sure if there is an exception for some connecting routings involving a domestic connection).

Probably also worth pointing out that HBO fares have the same conditions as standard as they are offered as a separate column on ba.com?