diff --git a/grade/edit/tree/index.php b/grade/edit/tree/index.php
index 81dfe816e4d..68bb267666d 100644
--- a/grade/edit/tree/index.php
+++ b/grade/edit/tree/index.php
@@ -335,7 +335,7 @@ if (!$moving) {
 if (!$moving && count($grade_edit_tree->categories) > 1) {
     echo '<br /><br />';
     echo '<input type="hidden" name="bulkmove" value="0" id="bulkmoveinput" />';
-    $attributes = array('id'=>'menumoveafter');
+    $attributes = array('id'=>'menumoveafter', 'class' => 'ignoredirty');
     echo html_writer::label(get_string('moveselectedto', 'grades'), 'menumoveafter');
     echo html_writer::select($grade_edit_tree->categories, 'moveafter', '', array(''=>'choosedots'), $attributes);
     $OUTPUT->add_action_handler(new component_action('change', 'submit_bulk_move'), 'menumoveafter');
diff --git a/grade/edit/tree/lib.php b/grade/edit/tree/lib.php
index ba65d9d994e..13154082030 100644
--- a/grade/edit/tree/lib.php
+++ b/grade/edit/tree/lib.php
@@ -1199,7 +1199,7 @@ class grade_edit_tree_column_select extends grade_edit_tree_column {
         if ($params['itemtype'] != 'course' && $params['itemtype'] != 'category') {
             $itemselect = '<label class="accesshide" for="select_'.$params['eid'].'">'.
                 get_string('select', 'grades', $item->itemname).'</label>
-                <input class="itemselect" type="checkbox" name="select_'.$params['eid'].'" id="select_'.$params['eid'].
+                <input class="itemselect ignoredirty" type="checkbox" name="select_'.$params['eid'].'" id="select_'.$params['eid'].
                 '" onchange="toggleCategorySelector();"/>'; // TODO: convert to YUI handler
         }
         //html_writer::table() will wrap the item cell contents in a <TD> so don't do it here