--- loncom/interface/courseprefs.pm	2022/02/16 00:06:04	1.103
+++ loncom/interface/courseprefs.pm	2022/02/16 15:58:28	1.104
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # Handler to set configuration settings for a course
 #
-# $Id: courseprefs.pm,v 1.103 2022/02/16 00:06:04 raeburn Exp $
+# $Id: courseprefs.pm,v 1.104 2022/02/16 15:58:28 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -1501,7 +1501,7 @@ sub process_linkprot {
             if (grep(/^\Q$home\E$/,@ids)) {
                 if (ref($domdefs{'privhosts'}) eq 'ARRAY') {
                     if (grep(/^\Q$home\E$/,@{$domdefs{'privhosts'}})) {
-                        my %privhash  = &Apache::lonnet::restore_dom('lti','private',$cdom,$home,1); 
+                        my %privhash  = &Apache::lonnet::restore_dom('lti','private',$cdom,$home,1);
                         $privkey = $privhash{'key'};
                         $privnum = $privhash{'version'};
                         if (($privnum) && ($privkey ne '')) {
@@ -1593,7 +1593,8 @@ sub process_linkprot {
             my $reqitem = 'form.linkprot_requser_'.$idx;
             $env{$reqitem} =~ s/(`)/'/g;
             unless ($idx eq 'add') {
-                if ($current{'requser'} ne $env{$reqitem}) {
+                if ((!$current{'requser'} && $env{$reqitem}) ||
+                    ($current{'requser'} && !$env{$reqitem})) {
                     $haschanges{$itemid} = 1;
                 }
             }