is to get double copies for all such certificates required by immigration canada, then submit one copy and keep another copy with yourself if you want to apply for US green card in the future.
but it's not required for canadian citizenship test. sorry but I don't understand what you mean 'for every country I have stayed to Canada'.
but it's not required for canadian citizenship test. sorry but I don't understand what you mean 'for every country I have stayed to Canada'.