Bug 127289 [Markers] SystemFilter and group selection state not preserved
We are not preserving the selection state of the system filters or which group is selected.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/views/markers/internal/MarkerFilter.java
List newTypes = new ArrayList();
			addAllSubTypes(newTypes);
			StringTokenizer stringTokenizer = new StringTokenizer(setting);
			while (stringTokenizer.hasMoreTokens()) {
				String id = stringTokenizer.nextToken(TAG_TYPES_DELIMITER);
				String status = null;
				if (stringTokenizer.hasMoreTokens()) {
					status = stringTokenizer.nextToken(TAG_TYPES_DELIMITER);
				}
				MarkerType markerType = MarkerTypesModel.getInstance().getType(id);
				if (markerType != null) {
					newTypes.remove(markerType);
					
					if (!SELECTED_FALSE.equals(status)
							&& !selectedTypes.contains(markerType)) {
						selectedTypes.add(markerType);
					}
				}
			}
			
			
			
			for (int i = 0; i < newTypes.size(); ++i) {
				selectedTypes.add(newTypes.get(i));
			}
		} else {