Hi ,
sorry haven't been able to find the answer to this with a search so far.
I'm flying on monday on the BA227 to Atlanta in J , booked by agent on a "D" class fare. In MMB i can UUA the return leg but my preference was to pay to upgrade the outbound for the extra tier points however this paid option does not show despite i think plenty of seats still available in first. Might this option appear to me at OLCI or is this not something i can do with and agent booking? I was hoping to get the cheaper op up type fares rather than the full fare diff assuming this would still give me the extra 70 TPs

Thank in advance.