Once your Salesforce connector is enabled in Pardot, the existing Salesforce leads and contacts do NOT automatically sync to Pardot. You will need to export your existing leads and contacts from Salesforce into a .CSV file.
Upon importing Contacts and Leads, Pardot will sync the prospect record with the existing Salesforce lead or contact record. If Pardot and Salesforce values differ when a data sync occurs, the value of the field in Salesforce will overwrite the value of the field in Pardot, unless you set field sync to “Use Pardot Value” on the individual field.
