hey can any one help me out.. i have more than 3 years of experience as medical sales representative after graduation in inida and while applying for study permit to canada in 2013 i have submitted my original experince letter to cic as i thought i wont need it again. but for in order to apply for express entry again i need my experience letter and now all the management has been changed and they dont have my records. But i have few paystubs with me and i convinced new manager that i worked in this company and he is willing to provide experience letter, now the problem is with the dates as i forgot the dates mentioned during study permit would that be a problem. does they verify study permit documents in background verification.