Haha...guess it is truly random and I should just ask. I actually stapled the loose FULL PAGE Macau gave me when I made a day trip there into my passport so that I could demonstrate and document all of my travel, but never considered I'd have "paperwork problems" with CANADA! On the bright side, I'm good for at least the next 5 years? Crossing all digits this doesn't come up again in a later review, since they *can* ask about anything..."yes, as I told the last investigator, I was biking and hiking around Vancouver, in between eating ALL THE FOOD...do I need to prove that AGAIN???"