Exporting Unique Vulnerabilities

Dear Team,
I’m in need of capturing the Unique Vulnerabilities for a specific period of time. Is it possible to achieve this through a Dashboard Query?

I managed to retrieve counts from the Dashboard Card “Vulnerability Trends by Severity: Stacked Area Chart,” but it displays the total vulnerabilities for every node/month.

However, when I click on any severity level, it only shows the unique vulnerabilities from the current scanning, not the previous scanning.

Could anyone please assist me with obtaining the Unique Vulnerability results.