yeah you are right, but in my case, im from iran, and canada has no politic relation with Iran nor does Iran,they dont have any embassies, so basically they dont have any connections, the thing is i asked the agent from CBSA over the phone that claimed refugee and now im on my pr, can i use my passport, she literally said yes there is no issue.but i forgot to ask whether i can renew it or not.and in order to renew my passport, i have to mail to Pakistan's embassy in Washingtonian, I am just confused.someone here emailed IRC and asked them the same question and im waiting for their explanation.You can not use your passport nor renew it. I have read about 5 cessation applications apart from the reavailment which most protected person are aware of. Renew your passport is one of those reason... using your passport lets say to cross to the US, is another reason on presumption that when you use your passport it comes with all the previledge as a citizen of that country, incase you face any problem that requires consular assistance or removal, they will contact your embassy ( that you fled and claim refugee ). Thats the reasons why statistics shows that Minister wins almost every cessation application. Justice website has resources to read
https://irb.gc.ca/en/legal-policy/legal-concepts/Pages/RefDef12.aspx