In the past, before we had the current closure notes the community user edited in the possible duplicates inside the text of the question, once the question got closed. See for example here.
Today some of these posts were bumped to the front page by edits, and I decided to get rid of the legacy messages. After a few edits it dawned on me that I effectively removed the only trace to the duplicate target by doing so. Which made me scramble to rollback those edits.
I was wondering if there is a way to bring these posts up to date. One way I could think of is re-opening and then closing them, to make the closure banner include the duplicate target, but this feels kind of cumbersome. While there is a bit of a shortcut, for those holding a golden tag badge, see for example here.
Are there any other suggestions?