@nhmmike yes that is right it would not change URL based on the new activity once activity is created, this approach seems to be intentional considering consistency for internal activity identifier and tracking for Analytics, as changing URL would impact tracking data.. in your example if you would like to have new URL then on tracking side two different activities will be tracked but actually it is only one activity
best approach would
- standardize the naming convention to avoid frequent change and consistence URLs
- create a whole new activity