Hi @lyric!1 - Welcome to AEP community. Are you currently runing your marketing campaign workflow using adobe campaign? are you looking to merge your campaign history data with AEP real time CDP? then are you want to extrat those relavant attributes based on certain segment? If my understanding is correct, then yes it is possible with several steps followed by,
1. Create a seperate profile level schema and dataset, make sure those campaign history attributes are added on schema.
2. Create a relavant segment, as per campaign history and other attribute as per your exact use case.
3. Set up a destination along with respective attribute which you want to export it to third party system.
So let me know if your understanding is different from my explanation, would be good if you added up some more detail if you need more clarification.