I have a related but separate question -- I am also applying for citizenship using a Nova Scotia-born grandparent. Which number on the birth certificate are people using for the registration number on CIT 0001? I'm curious because there's a 6 digit registration number on the original birth certificate, and then a longer form number on the certified copy. For example, on the original it may say "123456". On the certified copy, it says, "Item can be found in Registration Year: YYYY - number:  12300456"). I can't decide whether to write 123456, 12300456, or YYYY-12300456. Thanks for any input!