Genesys Cloud enables users to edit contact list filters through the List Management interface by accessing Menu > Digital and Telephony > Outbound > List Management and selecting the Contact List Filters tab. Users can modify existing filters by selecting the target filter checkbox to open its properties, then renaming the filter, adjusting conditions, or modifying condition groups as needed. The system supports voice campaign recycling functionality, allowing administrators to select checkboxes beside associated voice campaigns to recycle them with the updated filter settings. Campaign recycling is not available for messaging campaigns; when adding a contact list filter to an in-progress messaging campaign, the running campaign must complete before changes take effect. After making modifications, users click Save to apply the updated contact list filter, which triggers the system to recycle selected campaigns with the new filter parameters.