Bug 338707 Reconciler chokes on elements under parents that have been removed from the model
tests/org.eclipse.e4.ui.tests/src/org/eclipse/e4/ui/tests/reconciler/ModelReconcilerScenarioTest.java
public void testApplicationElement_Id_Changed() {
		MApplication application = createApplication();
		MWindow window = createWindow(application);
		window.setLabel("name");
		saveModel();
		ModelReconciler reconciler = createModelReconciler();
		reconciler.recordChanges(application);
		window.setLabel("customName");
		Object serializedState = reconciler.serialize();