Bug 316279 MCommand's 'parameters' feature is not being persisted correctly
SSIA
bundles/org.eclipse.e4.ui.workbench/src/org/eclipse/e4/ui/internal/workbench/XMLModelReconciler.java
if (change.getFeatureName().equals(UIELEMENT_PARENT_ATTNAME)) {
							return (EObject) change.getValue();
						}
					}
					break;
				}
			}
			if (reference instanceof MMenu) {
				boolean appendedMenu = false;
				for (Entry<EObject, EList<FeatureChange>> entry : objectChanges.entrySet()) {
					EObject key = entry.getKey();
					if (key instanceof MPart) {
						for (FeatureChange change : entry.getValue()) {
							if (change.getFeatureName().equals(PART_MENUS_ATTNAME)) {
								List<?> originalMenus = (List<?>) change.getValue();
								if (originalMenus.contains(reference)) {
									return key;
								}
								if (((MPart) key).getMenus().contains(reference)) {
									appendedMenu = true;
								}
								break;
							}
						}
					}
				}
				boolean menuSet = false;
				boolean menuChanged = false;
				for (Entry<EObject, EList<FeatureChange>> entry : objectChanges.entrySet()) {
					EObject key = entry.getKey();