Fixed underlying issue that causes item to not delete.  Now item will not cancel, as Cesium engine relies on the coreParent to be there, but Alberto will modify Cesium engine to operate properly and ignore coreParent.
Fixed underlying issue that causes item to not delete.  Now item will not cancel, as Cesium engine relies on the coreParent to be there, but Alberto will modify Cesium engine to operate properly and ignore coreParent.

georgegtx/emp3-web,missioncommand/emp3-web,missioncommand/emp3-web,missioncommand/emp3-web,georgegtx/emp3-web,missioncommand/emp3-web,georgegtx/emp3-web,georgegtx/emp3-web