If you don’t want Pitchbox to automatically deduplicate prospecting results, then you can turn this feature off. When you set up your campaign, go to 'Advanced Options'. Next to 'Opportunity Deduplication', select 'No'.
You have the option to adjust your Opportunity Deduplication setting for a new search on an existing campaign.
To read more about the Opportunity Deduplication function, visit this Knowledge Base article.