Refreshed and republished on September 10, 2021This post was originally published on February 2, 2021. After this post was published, Salesforce released the ability to check if a field has been changed. Previously, the solution was to clear out the UTM field values after the flow ran. The new solution is to use the is changed feature instead of clearing out field values.The ConceptIf a lead or a contact’s fields for UTM Source, UTM Medium…