Preconditions
- Mailchimp for Magento 1.1.15
- Any version of Magento
Steps to reproduce
- Go to Mailchimp lists and a create subscriber with the same email in two lists "list 1" and "list 2"
- At the configuration settings of the extension choose the "list 2".
- Create a Mailchimp campaign for "list 1", add a link to the store view with the "list 2" and run it.
- Follow link from the campaign and place a new order with the email which was used in p.1.
Expected result
- Order will by synced without reference to mailchimp_campaign_id

Actual result
Order is not synced. There is an error in Mailchimp.log: "A campaign with the provided ID does not exist in the account for this list."