Thanks. I feel your pain and hope that the wait will be over soon.
As for the older question in the other thread ... no, I never got anything beyond what was posted in that thread.
Well, probably it's no longer an issue, but looking back, I think
@canuck78 best understood your question and gave the best answer, prior to your thread being somewhat derailed by livinginCanada2016.
There is no "official" Canadian website or page declaring that thou shalt not abandon your children. It would be difficult for Canada to enforce such an edict in a foreign jurisdiction. Other than what you might tell the IRCC, how can they know what are the real arrangements you have in place for the children?
I am representative for my wife's sister. She is applying for PR. She has kids, who have had no relationship with their father for some years. She has shown them on her PR application as non-accompanying. So, they had medical exams when she did. But she has not been asked: "Because your children are non-accompanying, are you abandoning them?" If her application is approved, and she arrives in Canada, and decides to abandon the children, how will Canada know about it and what can Canada do about it? Not much.
In the case of sister, she intends to bring them to Canada, once settled herself. She will then have to obtain the consent of the biological father, which I gather she can obtain. If she could not, I would expect she could obtain a court order dispensing with consent.