Originally Posted by Caledonian
In mid July I am flying economy from SIN to BNE on Qantas metal.
The booking is in a class eligable for upgrade from discount economy
I think the main reason not to book in codeshare if possible is that in the case of BA you will only 25% of the base points you would earn if you had booked the same ticket with a QF code. The same issue arises if it's an AA code (50% of the base points) and i think there are some other discounts for other airlines. So, regardless of metal, it's always better to have a QF code.
I'd see if you can have the booking changed for this primary reason and then worry about the upgrade.