I wonder if I'm alone with this problem? On March 10, I had a first class ticket on AA 7223, a JAL operated code share from JFK-NRT, connecting to a CX flight to Taipei. When I arrived at the JL counter (over an hour before departure), they denied boarding, saying that althought AA had ticketed me and issued a seat assignment, the AA computer never communicated with the JL computer. I got the AA exec platinum desk on the phone and they confirmed to me and JL that I was ticketed on the flight, but JL still denied boarding and booked me on an All Nippon flight two hours later. Fortunately it was early and I made my connection. JL refused denied boarding compensation saying that any mixup was American's fault and American, other that depositing 5,000 miles in my account has not been able to offer the explanation I've asked for, even after a direct fax to Michael Gunn, the marketing guy. Is this common? It's never occured to me before and I want to know how I can avoid having it happen again in the future.

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Jerry R