This may be useful -
Applicants for permanent residence who are in possession of a Confirmation of Permanent Residence (CoPR) or Permanent Resident Visa (PRV) must inform IRCC, using a
Web form, if they cannot travel before the expiry date of the document.
Files will then be processed according to an applicant’s specific circumstances.
Those with valid COPR and PRV and who are unable or unwilling to travel must inform IRCC so a note stating their situation can be added to their file. A reminder must also be added to the file related to the expiry date of the document. If the event the applicant becomes able to travel before the expiry date of the COPR and PRV, they will be encouraged to use their existing document to land in Canada.
Individuals whose COPRs and PRVs have expired and who have informed IRCC of their inability or unwillingness to travel prior to the expiry date of the document will have their files re-opened and reviewed within 90 days.
source:
https://www.cicnews.com/2020/06/latest-guidelines-for-permanent-residence-applicants-0614602.html#gs.7rx9zi