Drupal Association members fund grants that make connections all over the world.
When I edit user profile fields, which are displayed in separate tabs as categories, and click on 'Save' on the profile category, the changes do not sync with the mailchimp list.
But if I click on 'Save settings' on the Newsletters tab on the user profile page, the changes are synced. But practically this is not going to be the case.
I did come across this issue earlier on http://drupal.org/node/605246, but I do not think there had been a solution.