I did a job many years ago, for which the original experience letter given to me wasn't detailed enough. So recently upon my request they have issued me a new experience letter detailing everything CIC requires (e.g. Job title, duties, etc). The only problem however is that this new experience letter isn't dated. That is, there's no date mentioned on the letter stating when the letter was signed and given to me. Can this cause issues later on as far as Express Entry is concerned ?