Leads in SalesLogix that were converted into an Account/Contact can be tracked in three ways.
The first and easiest way to track Leads in SalesLogix is in the Account and Contact Notes/History Tabs. Both the Account and Contact in SalesLogix will have a history item of type note inserted for the user that performed the conversion. The Description will be Lead Conversion Notes, which can be used in a group query to create a list of Accounts or Contacts that have been converted from a Lead. The History notes will also contain the converted date and converted by information, as well as other information if it was filled out in the Lead Detail section.