Updating Lead Source basis UTM Parameters
Hi,
I have setup my webinar registration form with three hidden fields to capture utm_source, utm_medium, utm_campaign from the website URL. These fields are linked with Person Source, Person Medium and Person Campaign in the form respectively. The issue that I am facing now it is updating old Person source of the lead i.e. from "email promotion" to "website". So how should I stop changing person source value with every form fill? I want Person source to be updated only if person source is empty.
Thanks
