And my travel history in general was on a "best effort" basis. I mean, it's so many trips for me, I had pages upon pages of travel history and I have a European passport, so there are many countries where I don't get a stamp. Most of those trips I don't even remember, so I can only input whatever is stamped in my passport. But even that is difficult with so many passports to go through, some stamps are not clear etc. But CIC didn't query this.
I really don't think you need to update this.