In reply to Jeff Chandler.

You could probably use this in conjunction with Edit Flow.

I built it as a lightweight plugin that clones and merges posts as quickly as possible.

If you have a post/page template you want to duplicate and edit. BAM. Done.

Or, if you have an existing post/page/custom post that needs updating. Clone, edit, view cloned copy, all good(?), merge into original. BAM. Done.

Feature requests welcome. Would love to here your thoughts.