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Hi there! Sam from Moz's Help Team here!:) You can absolutely download your current list of keywords to a CSV - all you would need to do is head to your specific campaign, and over to the 'Rankings' tab. Scroll down, and just above 'Tracked Keywords Overview' to the right you'll see a little 'CSV' button:). If you need any further help with this, do pop over a message to help@moz.com and we'll be happy to help you further!