When an interactive flowchart is no longer needed, you can mark it for undeployment. This will add the retirement request to the deployment queue. The next time all changes are deployed, the interactive flowchart is removed from the Interact server. Treatment rules containing the smart segments created by the flowchart you removed still exist, however, since there is no interactive flowchart to assign a visitor to that segment, no visitor will ever be assigned to the segments created by the flowchart you removed.