User:Jeropbrenda/Sandbox/Help:Merge history

If the destination page is a redirect to the source page

 * Check for deleted history at the target, and take note of all deleted edits there.
 * Delete the target page with the rationale "setting up for a history merge".
 * Restore all but the previously deleted edits and the oldest (redirect) revision(s) – these would have been deleted by a regular move when it "moved over the redirect".
 * Now MergeHistory can do the merge; this technique avoids making a new edit that needs to be reverted, which happens when the source is moved to the target

Undoing a merge
Go to Special:Log then choose "Merge log" and click "Unmerge".