I created a geoprocessing REST service on our ArcGIS server. That service has a number of tasks that I expose to users as ArcGIS Online Web Experience Builder custom tools. It all works great. I recently added an additional task to the existing REST service and would like to add an associated custom tool in Web Experience Builder but I can't figure out how to get Web Experience Builder to recognize that a new task exists, so I can't configure it. How can I do this (without deleting the existing custom tasks or manually editing the JSON in ArcGIS Online Assistant)?