How to keep comments when moving a site from http to https?

Question

Facebook

The site is moving from www.site.ru to https://site.ru

Comments from Facebook are not displayed on the site https://site.ru . How to move as correctly as possible and not lose comments.

Answer 1

How do I move a page to a different URL?
You need to add a canonical url on each page that points to the old address.

<meta property="og:url" content="https://example.com/old-url" />