Thanks for your response. Not confused with how we are making appeal. I know appeal they will approve based on ITA documents too, but my specific concern is whether IRCC accepts that COC received based on ITA. Reason - As I mentioned earlier there are similar other forums where people have submitted COC based on ITA and after submitting of PR application they asked to get the COC again based on the request letter. See below two cases I found:-1) An ADR for Police verification is considered serious as it falls under R-10 Completeness check (meaning you are expected to submit a police verification for your application to be complete). All PR applications are rejected without any consideration/extension if you do not meet R-10 completeness requirements. I suggest that you yourself do your math on this, as I'm not sure about either the actual timeline of ADR or whether ADR means your application processing is stopped.
2) Sorry but why would I worry about that? I have already received and uploaded original Singapore COC. I think you're confusing appeal with COC. Letter from IRCC or ITA is required for appeal, once appeal is approved, you have your COC. It has no mention of how your appeal was approved. COC mentions your criminal involvement record.
3) Good question! So for spouse upload ITA + Marriage certificate and for children upload ITA + Birth certificate.
Hope my answer helps.
https://www.canadavisa.com/canada-immigration-discussion-board/threads/singapore-police-coc-from-overseas-timeframe-jan-2019.605160/ - Here, check response from
mbaleine
https://www.canadavisa.com/canada-immigration-discussion-board/threads/police-certificate-for-singapore.562660/#post-7642834 - Here check response from
jjsekh
So, I am just looking help and confirmation who has passed from all these and got the PR and hence suggest us the right way to move forward.