Originally Posted by
thijsseh
Generally in this tread we use ‘cabins’ (Y, J and F) rather than fare buckets. In the end one sits in a cabin and the fare bucket is of no significance by that time. Also, fare buckets are rather opaque to the general public. So although I certainly don’t presume to set the rules here, I would suggest we all stick to Y, J and F for op-up purposes!
In the past claims were made tickets already upgraded with miles are excluded from upgrades. Clearly this isn't true.