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Hi there! Thanks so much for the great question! We don't continue to gather new data while your Campaigns are archived, but we keep all your historical data for around 12 update cycles. For weekly updates, that'd be 12 weeks and 12 months for monthly updates. The only exceptions to this rule would be for rankings and link histories, which we'll keep forever. I also have a guide from our Help Hub here that may help. Hopefully this provides the info you're looking for! If not, please feel free to email in to help@moz.com.