Sorry to say that the latest consensus is prolly correct! It appears that CO has learned their lesson after the "Great Winter Mileage Avalanche."
I registered for the three promos that allowed me to do so online. And even now, when I attempt to reregister online, the computer tells me, "Your account has already been registered for this offer."
However, while calling CO on other matters yesterday, I inquired if they showed me registered for any current promos. Both a reservation agent and later an OPSC agent said "no."
It appears that CO has been checking the registrations and removing the ones that haven't been flagged. Looks like the "gottcha" is on us this time. Sigh!
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In Economy...no one can hear you scream!