Clio Manage → Zapier → Mailchimp: Step 3 shows data, but Mailchimp contact is not updating

Hello Zapier Community!

I am trying to update client contact information from Clio Manage into Mailchimp using Zapier.

My Zap setup is:

1. Clio Manage – New Contact
2. Clio Manage – Find Person by ID
3. Mailchimp – Create/Update Subscriber

The issue is that the data appears correctly throughout Zapier. In Step 3 (Mailchimp Create/Update Subscriber), I can see the contact information being sent, including fields such as name, address, phone number, and birthday.

However, when I check the contact record in Mailchimp after the Zap runs, the information is not updated or does not appear.

My Mailchimp audience fields and merge tags are set up:

• FNAME
• LNAME
• ADDRESS
• PHONE
• BIRTHDAY

The Zap run shows success, but Mailchimp does not reflect the updated information.

Questions:

1. Is there a Mailchimp setting that prevents Create/Update Subscriber from updating existing contacts?
2. Do I need to map the Mailchimp merge fields in a specific way?
3. Is there a difference between updating a subscriber and updating contact profile fields in Mailchimp through Zapier?

Any advice would be appreciated. Thank you.