I am flying Economy ( booking code is Y) on LH from MUC-SFO and its up-gradable using 25K UA miles. On calling UA the person was very helpful and put my request thru and few minutes back LH responded that upgrade unavailable. He said its fairly common and LH doesn't release seats till last minute. I had some bad luck on other *A partners. UA rep said Air New Zealand and SG are both worse ( no suprise). My questions is why wouldn't * A try to make group wide upgrades a selling point? Wouldn't it be a selling point? How has others experience been?