Board Thread:Support Requests - Getting Technical/@comment-3247345-20131004010628/@comment-1158325-20131004061738

To build on that answer, recreating a page will make the revisions stay deleted. If you then deleted the new page, all of the revisions of both the old and new pages will be in that page's history, and as Thisismyrofl said you can choose which specific revisions to restore.