Hi.
It happen to one of my friends as well. She was not able to write it down because the question is when did you left canada and the reason is the usual visit. Then during her vacation, there is a change of plan and travel to other country BUT still on the dates included on her vacation. When she was asked about it, she mentioned that her vacation still included in those dates that she was away. For as long as you answer the question correctly and you know that your vacation still or the dates are still in that vacation days, you are fine.
Example:
She left the country Jan 3 and returned on Jan 25. During those days in between, she traveled to visit her friends from other country from Jan 8 to 12. She cant add those days because it is included in those days that she is away. She just wrote the reason that those days from Jan 3 to Jan 25 are her vacation days and those in between still her holidays.
I hope this will help. She already a Citizen many years ago.
Yes it was during that trip. Thankyou so much. Yes it really helps me !