restore "save/save as"

I really hate the "save version" & "duplicate". I work with a lot of existing documents in Pages and Keynote. I like the autosave and versions concept except for when I open an existing doc or template and simply edit/add to it and save it as a new document. You have to duplicate the previous document and then wind up with two open docs on your desktop. The previous method was simple--and I would love to see it restored as an option.