See for example Why is there a module for version 9 of core? migrated to Drupal Answers from its meta site. The link given in migrated from meta.drupal.stackexchange.com Oct 19 '13 at 16:40 points to https://meta.drupal.stackexchange.com/posts/2703/revisions instead of https://drupal.meta.stackexchange.com/posts/2703/revisions.
Furthermore, when following the link, Chrome gives two errors: Your connection is not private and NET::ERR_CERT_COMMON_NAME_INVALID.
http://
, nothttps://
. And thehttp://
link would still work, as a redirect. It should have been left as it was (HTTP), or updated properly (HTTPS and new domain name). Related.