Thanks for the update. I'll admit to not reading the guidelines closely until now, but since they don't actually outline a list of websites considered 'non-original', this does essentially mean that HN can apparently shift comments you make for any arbitrary URL to another, and you have no way to know beforehand.
Sorry, I don't mean to sound irritable, but attaching my comments to an article I didn't intend is way too close to putting words in my mouth.