Copying a campaign or archiving maps?

I don't think this is an option. Though if anyone has intel as to otherwise, you'd be my favorite. 

Both are options. I don't understand the question - are you asking how to copy a game or archive maps? 1. Can you copy a game: Yes - on the Campaign Details page (outside of the game); click on Settings > Copy Game 2. Can you archive maps: Yes - on the Page Toolbar (inside the game); click on Page Settings and scroll to the bottom of the Page Details tab and click on "Archive"

I'm not 100% on what you're asking, so I'll answer what it seems like: Can you copy a campaign (Game) with the API:  No.  API scripts exist inside a Game, so accessing things outside one is not really in scope. Can you archive maps (Pages) with the API: Yes.  Archived is a read/write property on the Page object. Freebie:  Can you organize Pages on the Page Toolbar: No, that's not yet exposed to the API.

Note that archiving maps (as well as characters and handouts) is purely for organizational/visual purposes - it just "de-clutters" your display. Archived objects still load when your game starts, and contribute to the game's memory footprint, which can lead to lag.