Thank you for implementing my idea about limiting the records processed in Mailchimp-sourced formula to just records in a certain Mailchimp interest group. More helpful to us than this would be the ability to exclude records in an interest group. This is because we do want the formula to include new records that were added to Mailchimp via a signup form, and those records would not be in the group in question yet (we are using this feature with a hidden group, so subscribers can't select it when signing up). Thank you for considering this feature enhancement. Bill