Using Form to update OM Contact Information

3Seed Marketing asked on February 9, 2016 22:08

I'm trying to use a form to enable Contacts to update their preferences/contact information. I'm getting the contacts to the form by sending out an email with a link in the body that appends their ContactGUID as a query string. I then retrieve and populate the form once they open it using default values in the form example: Default Value: {% SiteObjects.Contacts[QueryString["CGUID"].ToString()].ContactEmail #%}

This all works properly, however, once they submit the form it does not update their contact information, instead it creates a new contact and merges them together.

How do you make it so that the form submission updates the already existing contact instead of creating a new one and merging the two together?

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