I created a Zap to collect lead data from an Aweber form embedded in my blog post, add the subscriber in Aweber, or update subscriber if one already exists, then check my CRM, Wealthbox, and do the same (add if no record exists, update if one does exist.) All works except when a record exists in Wealthbox, the form data overwrites the existing data rather than updating/appending. How do I force it to append vs. overwrite?
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