Hi Javier, thanks for your input.
it seems that you are 100% right. I just received the email sent at 0300Z today informing that the flight was unlocked!
The sad thing is that at that time I was on final for RWY27L in Atlanta. My touchdown was at 0309Z today after almost 10 hrs airborne.
I think that something has changed in Propilot then because it is not the first time I fly in these conditions and never had this problem.
I cannot understand how the system could not verify that the flight was in progress.
Back to Buenos Aires then. Anyhow, I love that city. For me, it is the Paris of America. And they speak Spanish!
Regards,
Hector