hi, i lost my PR card but i have my orig COPR , my interview is nextweek. I submitted a solemn declaration and bring a copy of it in my interview. Would it be fine?
That should be fine. If you've submitted the solemn declaration then they'll have updated their systems (and notified CBSA), so they won't expect you to have the card anymore.
Do make sure to take sufficient forms of ID (driver's licence, health card, passport(s),...), as without the PR card you have one fewer piece of photo ID.
(Anyone else reading this: make sure to complete the Solemn Declaration concerning a Permanent Resident card that was lost, stolen, destroyed or never received (CIT 0459E) as soon as you notice you've lost your PR card. Not doing so may mean you won't receive your citizenship certificate at the ceremony, but only later, once the Solemn Declaration has been submitted and processed. You may luck out and be allowed to complete it at the ceremony, but that is not guaranteed.)