Zapier - Am I using the right Zap?

Hi there,

I have successfully created a ZAP between FB Leads and Constant Contact.
The problem I am having is that quite a few of my leads that are being generated are already on my Constant Contact.
It looks like the Zap is ignoring already existing Contacts but ideally I would like the Contact to be updated if already on my list.

I am using the "Find or Create Contact in Constant Contact" action and I see the option to create a contact if not found but nothing to indicate update a contact if found.

Any assistance would be appreciated.

Regards

Tony