Edit link to replied-to post after move

Instructions:

  1. Go to the thread where the reply was posted originally before you moved it (“thread A” in your case).

  2. Find the post that states you have split the topic and moved a post to another topic. It will say something like:

    [username] SPLIT THIS TOPIC […] AGO
    A post was merged into an existing topic: Thread B Topic Title

    You may have hidden / deleted it already, in which case click “VIEW 1 HIDDEN REPLY” to see it again.

  3. Edit that post and delete the link to thread B in it. This will remove the auto-generated link that had appeared in your thread B.

Explanation: these auto-generated links are like “backlink indicators” in WordPress: they point back to the topic that contains a link to the current topic. By removing that link as shown above, the auto-generated link also disappears automatically.