I have found that every time Delta makes a schedule change, even if it is a few minutes or just a flight number, our seat assignments need to be done over. Moreover, it usually requires a call because their system sort of locks up till the record is "cleaned." I don't know if this is an industry-wide event, but a few days before CAMEL, we are flying to Seattle for Gail's son's wedding. I have had to redo our seats at least 6 times in the past few months.
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Eugene
