Existing MailChimp list does not appear in admin/config/services/mailchimp/lists/1/edit MailChimp List after a drupal site move and upgrade.
An existing Drupal 6.9/ MailChimp 6.x-2.4 installation is being moved from a hosting service to a new VPS (with a new IP) The original site has a newsletter subscription block that updates MailChimp for authenticated users optioning to subscribe. This site is updating an existing mailchimp list of 403 total subscribers.
The site was moved and upgraded to Drupal 7.18 and MailChimp 7.x-2.8.. The MCAPI class library was installed. The new admin/config/services/mailchimp page shows the correct API key. However the subscription block disappeared in the upgrade.
The new upgrade site database has both a mailchimp_lists table with one list (the list ID matches the MailChimp List ID) and a mailchimp_user table with 231 current and 4 pending entries. Cron was run and both the "Add a list" and the Edit options on the existing list were attempted from the new site. 'Refresh lists from MailChimp' also ran and reported a successful update. However, the existing MailChimp list does not appear. The new site list options are Type=Optional. Synch during Cron, Roles: anonymous user. These can not be edited with out the required MailChimp list selection.
The API Call log shows current calls from the original hosting service IP addr. There are no calls from the new VPS IP addr. The calls from the old site seem to indicate an error "(200) List_DoesNotExist". However new subscribers using the old site subscription block show up in the MailChimp Dashboard.