LinkedIn Lead Gen Default Person Source
We have successfully synced a LinkedIn Lead Gen form to our Marketo instance. However, the Lead Source field appears to be overwritten. In the LinkedIn Form, there is a hidden field for Lead Source with value of "Social". When the test lead was created in Marketo, the Lead Source was "LinkedIn Lead Gen". This is not a picklist value in Salesforce and will cause issues downstream. Any ideas on how to force the "Social" Lead Source value? Screenshots below.
Form mapping in LinkedIn Lead Gen Form

Mapping in Marketo Admin

Activity Log Detail when test lead is created. Note Person Source is not "Social"
