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Questions can be merged into other questions.

  • What is a merged question?
  • When should questions be merged?
  • Who can merge questions? How do I request it?
  • What happens to merged posts?
  • Anything else I should know about merged questions?

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  • The tag wiki already explains most of this: meta.stackoverflow.com/tags/merged-questions/info AFAIK this does not involve users (other than perhaps the initial close votes and maybe a flag indicating that a merge might be useful/possible). – Bart Dec 8 '12 at 22:13
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What is a merged question?

A merged question is a question where a moderator has chosen to move its answers to another question, because it is an exact duplicate of another and has good answers that would be useful on the target. Merged questions are also locked to prevent edits.

When should questions be merged?

Questions should be merged if one question is an exact duplicate of another (i.e. when its answers would make perfect sense on the other question), and its answers are high-quality and valuable enough to be included on the other question itself, so that good answers aren't forked across multiple copies of the same question. In order to merge a question, the question to be merged must first be closed as a duplicate of the intended merge target.

Who can merge questions? How do I request it?

Only moderators can merge questions. If you believe a question should be merged, first vote or recommend closure flag to close it as a duplicate, and wait until the question gets closed as a duplicate. Once it is (or if it already is), flag the question for moderator attention, clearly explaining that the question should be merged and that it fits the guidelines in the above section.

What happens to merged posts?

Merged question / merge stub

  • A notice is added, stating that the question has been merged, along with the merge target.
  • All of the answers on the merged question are deleted.
  • The question is locked.
  • As the question is closed as a duplicate without answers, it automatically redirects to the target question for anonymous (logged-out) users.
  • If the merge stub gets deleted, it will redirect to the target post for users who don't have enough reputation to see deleted posts. This applies even if the ?noredirect=1 parameter is used.
  • Favorites on the merged question are cleared and transferred to the target question.
  • The following is added to the edit history:

    Post Merged (source) to example.com

Target question

  • All of the merged question's answers, including their votes and comments, become answers to the target question. Non-deleted comments on the merged question are moved to the target question.
  • Users who favorited (starred) the merged question will be automatically favorited to the target question.
  • The following is added to the edit history:

    Post Merged (destination) from example.com

Anything else I should know about merged questions?

  • The merge stub question is locked to prevent edits to its content that would make the merge no longer make sense. If you need to make edits to it for any reason (e.g. it uses a tag being removed as part of a community cleanup, or it has a broken link serving malware, etc.), flag it for moderator attention and clearly explain the problem.
  • As merged questions are locked, they are exempt from the Roomba autodeletion criteria as those exclude locked questions (except those locked as migration stubs or rejected migrations). If you believe a merge stub is no longer useful, flag it for moderator attention and ask for it to be deleted.
  • Votes on the merged question do not get imported into the master question
  • If a question with answers is merged into a community wiki question, the answers will not be automatically converted to community wiki.
  • If a merge stub that was originally migrated from another site is deleted, it does not cause the migration to be marked "rejected" as it normally would in most cases.
  • User reputation is unaffected when a question is merged. Users who asked or answered the merged question retain their reputation as-is. Answers to the merged question can gain additional reputation after getting migrated to the target question.
    • If the merge stub is later deleted, the asker will lose the reputation they earned from it unless it had a score of 3 and was visible for at least 60 days (the normal criteria for reputation retention).

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