Hello AmandaL921,
Thank you for reaching out to Constant Contact API Developer Support. My team is here to assist outside software developers with questions about building into Constant Contact's API.
Based on our logs, it looks like you may have already resolved this issue, however, this is what I found:
It looks like the address in question was being added to the campaigns via the JSON request body of PUT calls that were being made to /emails/activities/{campaign_activity_id}, within the physical_address_in_footer parameter.
Please have a look and let us know if you have any other questions!
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