You should still be able to do it with Forum rules. As long as the user has tapped out of the address field so that is populated you then should be able to make a checkbox field which says [Billing Address Same as Mailing Address?] And have the form real kick in to populate the subcomponent fields of the Billing Address fields.
So both the Mailing Address and the Billing Address will be Address field types, but the form rules should be able to populate the subfields of the Billing Address.
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Mark Shnier (Your Quickbase Coach)
mark.shnier@gmail.com
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