Copy a LinkedIn campaign (ad set)

Copies the settings of an existing campaign (an ad set in Campaign Manager) — objective, type, format, bidding (automatic, or manual with its cost type and bid), budgets, language, delivery settings and targeting — into a new PAUSED campaign, with optional overrides for name, budget, schedule, language, Audience Network and targeting. Use when: an approach works and should be repeated for another market, audience or offer. Cloning keeps the settings that are working and makes the difference explicit. For another market: put the new locations in add_targeting.locations AND the original ones in remove_targeting.locations — add_targeting alone keeps the original market too — and pass language when that market uses LinkedIn in another language. The preview names the locations the copy will target; read them to the user before they approve. Do not expect the creatives (ads) to come with it: LinkedIn creatives belong to a campaign, and the clone starts empty. Add one with linkedin_add_creative or it can never spend, however healthy the settings look. Do not clone to make a small change to the original — that is linkedin_update_campaign. Two near-identical campaigns split the audience, compete in the same auction, and make both look worse. Do not clone into the same audience without changing the targeting; state plainly that the two will overlap if the user asks for it anyway. The preview counts the copy's audience and refuses targeting under LinkedIn's 300-member minimum. Returns the new campaign id and what was copied versus overridden. Nothing spends until it is resumed and has a creative.