What this operation supports in Mautic
Updates an existing segment's name or filter criteria by its ID.
Implementation details
Changing the filter criteria on a filter-based segment immediately changes who's considered a member, since Mautic recalculates membership from the new rules.
Operational considerations
Testing a filter change against a small, known set of contacts before relying on it in an active campaign helps confirm it captures the intended audience.
Use cases
Iterative segmentation based on evolving product or event data in Mautic.