Originally Posted by
SpammersAreScum
Please have a look at
the relevant AA page and see for yourself. Upgrading BA-marketed AA-operated
is possible, with caveats:
1.
2.
You will notice BA's B qualifies. So, as far as I can see, your original assumption was correct.
You will notice there's been much discussion on this thread about needing to change marketing carrier, but that was always related to the whole PE mess, which does not apply here. Your reference to this being "part of a BA Premium Economy trip" may have muddied the waters.
If you look at the page, you can see that for upgrade from economy, the valid classes states
■Full-Fare Economy with published fares booked in Y (excluding Military or Government fares)
and that B is no longer listed as an upgrade class from economy . The table used to be less clear and also allow B, but no longer lists B
Regardless, in order to upgrade, it is necessary to rebook onto the AA flight number and B is no longer offered by AA so cannot convert to B.
Also., there is no partner award upgrade for within North America , only for North America to either of Europe, Africa ( via Europe ) or Indian Subcontinent/Middle East