To ensure you're only viewing new records that haven't been previously downloaded:

1. The deduplication filter in your account is set to "Net-New Records" by default, ensuring you only see new leads.

2. To verify or adjust this setting, navigate to the "Deduplication / Suppression" tab. You can find this on the left side of the "Filters" section towards the bottom.

3. By confirming this setting, your searches will automatically exclude any records you've already downloaded, allowing you to focus on acquiring new leads.