@ leon. Can that help to avoid questions about my date of departure ?

[jorj]

 @  leon. thanks for your answers. I have one more question though. When I am entering canada with my PR card, if the officer asks me "when did you leave canada ? " , I will give him an exact date. So will he register that date in the system, or he will just hear and they will forget about it later on. I mean do I need to remember exactly what i said to the airport officer, when I apply for PR card renewal after 5 years ?

[Leon]

I don't know if they record it.  If you are coming by plane, you fill out a customs form where you are asked how long you have been outside Canada so there will be a written record of that with your signature on it.  I also don't know if immigration keeps those forms.  The best policy to avoid getting caught in a lie is to tell the truth.  Keep records of the dates you have left and entered Canada because you will need them later to apply for PR renewal or to apply for citizenship.