--- loncom/interface/domainprefs.pm	2014/04/28 01:48:04	1.238
+++ loncom/interface/domainprefs.pm	2014/05/04 21:48:56	1.239
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # Handler to set domain-wide configuration settings
 #
-# $Id: domainprefs.pm,v 1.238 2014/04/28 01:48:04 raeburn Exp $
+# $Id: domainprefs.pm,v 1.239 2014/05/04 21:48:56 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -622,7 +622,7 @@ sub process_changes {
     } elsif ($action eq 'scantron') {
         $output = &modify_scantron($r,$dom,$confname,$lastactref,%domconfig);
     } elsif ($action eq 'coursecategories') {
-        $output = &modify_coursecategories($dom,%domconfig);
+        $output = &modify_coursecategories($dom,$lastactref,%domconfig);
     } elsif ($action eq 'serverstatuses') {
         $output = &modify_serverstatuses($dom,%domconfig);
     } elsif ($action eq 'requestcourses') {
@@ -9364,7 +9364,7 @@ sub modify_scantron {
 }
 
 sub modify_coursecategories {
-    my ($dom,%domconfig) = @_;
+    my ($dom,$lastactref,%domconfig) = @_;
     my ($resulttext,%deletions,%reorderings,%needreordering,%adds,%changes,$errors,
         $cathash);
     my @deletecategory = &Apache::loncommon::get_env_multiple('form.deletecategory');
@@ -9605,6 +9605,12 @@ sub modify_coursecategories {
                 }
             }
             $resulttext .= '</ul>';
+            if ($changes{'unauth'} || $changes{'auth'}) {
+                &Apache::loncommon::devalidate_domconfig_cache($dom);
+                if (ref($lastactref) eq 'HASH') {
+                    $lastactref->{'domainconfig'} = 1;
+                }
+            }
         } else {
             $resulttext = '<span class="LC_error">'.
                           &mt('An error occurred: [_1]',$putresult).'</span>';