The below link clearly states that we need to submit IELTS, Police certificate, and ECA for primary applicant , if they are expired. I think most of the applicants who are in gaining experience category inside Canada have their documents in expired status. This is a big headache to gather all these documents again --
https://www.canada.ca/en/immigration-refugees-citizenship/services/application/application-forms-guides/guide-0104-home-care-support/pr.html#0103E3
Download the checklist IMM 5981 from the link :
https://www.canada.ca/content/dam/ircc/documents/pdf/english/kits/forms/imm5981e.pdf
https://www.canada.ca/en/immigration-refugees-citizenship/services/application/application-forms-guides/guide-0104-home-care-support/pr.html#0103E3
Download the checklist IMM 5981 from the link :
https://www.canada.ca/content/dam/ircc/documents/pdf/english/kits/forms/imm5981e.pdf