Originally Posted by
BackOfBeyond
You will most likely get Avios and Tier Points for the upgraded cabin - it just might take a week or two to sort out after you call.
Errr... no, this is simply wrong. As pointed out by several others, BA gives Avios and TP corresponding to the upgraded class of travel for discounted upgrades on their own flights, but corresponding to the original booking for discounted upgrades on partners.