Bug 94456 [Undo] - Resource Navigator not showing workspace undo actions
The Resource Navigator is not showing the workspace undo actions. Package Explorer is correctly working. Need to look at the difference in the way the action handlers are set up.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/views/navigator/ResourceNavigator.java
* Views plugin store.
     */
    private void migrateDialogSettings() {
        AbstractUIPlugin uiPlugin = (AbstractUIPlugin) Platform
                .getPlugin(PlatformUI.PLUGIN_ID);
        IDialogSettings uiSettings = uiPlugin.getDialogSettings();
        uiSettings = uiSettings.getSection(STORE_SECTION);
        if (uiSettings != null) {
            String workingSetName = uiSettings.get(STORE_WORKING_SET);
            if (workingSetName != null && workingSetName.length() > 0) {
                settings.put(STORE_WORKING_SET, workingSetName);
                uiSettings.put(STORE_WORKING_SET, ""); 
            }
            String sortType = uiSettings.get(STORE_SORT_TYPE);
            if (sortType != null && sortType.length() > 0) {
                settings.put(STORE_SORT_TYPE, sortType);
                uiSettings.put(STORE_SORT_TYPE, ""); 
            }
        }
    }
    /**
     * Restores the saved filter settings.
     */
    private void restoreFilters() {
        IMemento filtersMem = memento.getChild(TAG_FILTERS);
        if (filtersMem != null) { 
            IMemento children[] = filtersMem.getChildren(TAG_FILTER);
            
            if (children.length > 0
                    && children[0].getString(TAG_IS_ENABLED) != null) {