diff --git a/admin/code/LeftAndMain.php b/admin/code/LeftAndMain.php
index 622a69b16..a923ab6cd 100644
--- a/admin/code/LeftAndMain.php
+++ b/admin/code/LeftAndMain.php
@@ -289,6 +289,7 @@ class LeftAndMain extends Controller implements PermissionProvider {
 					FRAMEWORK_ADMIN_DIR . '/javascript/LeftAndMain.Preview.js',
 					FRAMEWORK_ADMIN_DIR . '/javascript/LeftAndMain.BatchActions.js',
 					FRAMEWORK_ADMIN_DIR . '/javascript/LeftAndMain.FieldHelp.js',
+					FRAMEWORK_ADMIN_DIR . '/javascript/LeftAndMain.TreeDropdownField.js',
 				),
 				Requirements::add_i18n_javascript(FRAMEWORK_DIR . '/javascript/lang', true, true),
 				Requirements::add_i18n_javascript(FRAMEWORK_ADMIN_DIR . '/javascript/lang', true, true)
diff --git a/admin/javascript/LeftAndMain.TreeDropdownField.js b/admin/javascript/LeftAndMain.TreeDropdownField.js
new file mode 100644
index 000000000..d1032cbec
--- /dev/null
+++ b/admin/javascript/LeftAndMain.TreeDropdownField.js
@@ -0,0 +1,17 @@
+(function($) {
+	$.entwine('ss', function($){
+
+		// Any TreeDowndownField needs to refresh it's contents after a form submission,
+		// because the tree on the backend might have changed
+		$('.TreeDropdownField').entwine({
+			'from .cms-container form': {
+				onaftersubmitform: function(e){
+					this.find('.tree-holder').empty();
+					this._super();
+				}
+			}
+		});
+
+	});
+
+})(jQuery);