Thread:The Zog./@comment-34296765-20150223035216/@comment-25653892-20150301061632

Under the header, there should be info for the last edit, for whatever reason. Hit the (diff) link, scroll through the changes modal, and press the Undo button.

Otherwise, press Edit > History, then hit the (undo) link by the most recent edit.

Either way, the editor for that article should open and display the diffs above the edit area. Then just press the publish button as usual.

It's basically an automated version of resubmitting a previous version as the newest edit, if that makes any sense whatsoever.