Old Jul 25, 12, 9:33 pm
  #7  
BDA shorts
 
Join Date: Nov 2007
Location: Itinerant
Programs: DL FO, AA PLT, BD *G
Posts: 383
This brings up a related question that I finally found the answer to a few days ago: What happens when, after you pass exit immigration, you get bumped off a flight and won't fly again until the next day?

In my case in UIO they had to bring me back to immigration where they took my passport to an office and canceled the stamp, then I exited again the next day without a problem.

In YUL they don't have exit controls but they do have US pre-clearance. A few years ago I went through US immigration, got bumped off my flight, had to go through Canadian customs to get to the check-in counter of the other airline, then had to go through US pre-clearance again--and by their questions it was clear that their system didn't show me "entering" the US an hour previously.
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