Well, I made the 100 mile R/T trek to MIA today. I spent about an hour at the BA counter and came away with a 19 segment, nicely printed by Amadeus, BA ticket for the balance of my current RTW. I must say that I was very pleasantly surprised by the professional manner of the ticket counter agent. He did a great job in about 45 minutes while I waited. Alas, I still do not have a tax calculation (he did not redo it) but each ticket is labeled "ALL TAXES PAID." We'll see if this counts for anything, anywhere.