Multi Step Form

Using a multi-step form with plugin Contact Form 7 Multi-Step Forms. Also using an auto complete plugin called Address Autocomplete Contact Form 7.
On the first form I am collecting only an address.

I show the address on the second form page using the tag [multiform “address_geo_autocomplete-70”]. I then collect email, name etc.

I receive the address in the email from Contact Form 7 using this tag [address_geo_autocomplete-70] under the Mail tab.

I receive all fields from second form like email, name etc in email and in Maichimp.

However, I can’t get the address into Mailchimp as under Custom fields the form tag [address_geo_autocomplete-70] does not show up as an option.

How can I get this address into Mailchimp?

Thank you.