I need to be able to refresh several feature services in a WAB application after running a Geoprocessing service to delete all records in these select layers. I have modified the widget.js as described here, Layers Refresh Option in Geoprocessing Widgets.js in the WEB App Builder but when running my GP, the records are deleted but my web map/app still does not refresh the layers. Any recommedation? Doesn't seem like a refresh should be this difficult. Thanks.