Reporting on Campaigns with Leads
|Knowledge Article Number||000240345|
Based on settings within your org, it's possible to access a Lead record and add Campaigns to the Lead after the Lead has been converted. This can cause some confusion in the reporting of Campaigns and Leads because the the Lead would not show on the Campaigns with Leads report after it has been converted, unless the Campaigns were added after the conversion.
The "Campaigns with Leads and Converted Lead Information" report type will show all of the Leads associated with Campaigns, whether they have been converted or not.