Washing one campaign keyword list against another

I've got a client with an existing campaign in Google Adwords set up by the previous service provider. I don't want to turn this campaign off, I want to create a new campaign from scratch, based on my own keyword research. I think there might be some cross over of the keywords I include in my new campaign, with the keywords in the old campaign.

Is there a way to ensure that keywords in one campaign will not interfere with keywords from another campaign (in the same account), to ensure I'm not bidding on the same keywords twice?

 

If both campaigns are in the same account, you can run a search for duplicates in adwords editor