--- loncom/interface/domainprefs.pm	2025/01/12 16:10:23	1.448
+++ loncom/interface/domainprefs.pm	2025/01/12 16:23:33	1.449
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # Handler to set domain-wide configuration settings
 #
-# $Id: domainprefs.pm,v 1.448 2025/01/12 16:10:23 raeburn Exp $
+# $Id: domainprefs.pm,v 1.449 2025/01/12 16:23:33 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -12140,7 +12140,11 @@ sub modifiable_userdata_row {
         my $hashref;
         if ($context eq 'lti') {
             if (ref($settings) eq 'HASH') {
-                $hashref = $settings->{'instdata'};
+                my %instdata;
+                if (ref($settings->{'instdata'}) eq 'ARRAY') {
+                    map { $instdata{$_} = 1; } @{$settings->{'instdata'}};
+                }
+                $hashref = \%instdata;
             }
         } elsif ($context eq 'privacy') {
             my ($key,$inner) = split(/_/,$role);
@@ -16087,9 +16091,9 @@ sub modify_lti {
             }
             my @possinstdata =  &Apache::loncommon::get_env_multiple('form.lti_instdata_'.$idx);
             if (@possinstdata) {
-                foreach my $field (@possinstdata) {
+                foreach my $field (sort(@possinstdata)) {
                     if (exists($fieldtitles{$field})) {
-                        push(@{$confhash{$itemid}{'instdata'}});
+                        push(@{$confhash{$itemid}{'instdata'}},$field);
                     }
                 }
             }
@@ -16251,7 +16255,7 @@ sub modify_lti {
                         }
                     }
                     unless ($changes{$itemid}) {
-                        foreach my $field ('makeuser','lcmenu') {
+                        foreach my $field ('makeuser','lcmenu','instdata') {
                             if (ref($currlti{$field}) eq 'ARRAY') {
                                 if (ref($confhash{$itemid}{$field}) eq 'ARRAY') {
                                     my @diffs = &Apache::loncommon::compare_arrays($currlti{$field},
@@ -16465,8 +16469,10 @@ sub modify_lti {
                                 $resulttext .= '<li>'.&mt('Institutional data will be used when creating a new user for: [_1]',
                                                           join(', ',map { $fieldtitles{$_}; } @{$confhash{$itemid}{'instdata'}})).'</li>';
                             } else {
-                                $resulttext .= '<li>'.&mt('No institutional data used when creating a new user.').'</li>';
+                                $resulttext .= '<li>'.&mt('No institutional data used when creating a new user').'</li>';
                             }
+                        } else {
+                            $resulttext .= '<li>'.&mt('No institutional data used when creating a new user').'</li>';
                         }
                         foreach my $item ('topmenu','inlinemenu') {
                             $resulttext .= '<li>'.$lt{$item}.':&nbsp;';