<font face="Verdana, Arial, Helvetica, sans-serif" size="2">Originally posted by BumpMe!:
Will it be okay, then to secure an upgrade (although doubtful) using my DL Skymiles number and then switch to OP number at the gate?</font>
No, as check-in agents are supposed to rescind the upgrade if the FF# used to upgrade the flight is removed.
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