diff --git a/authorities/authorities.pl b/authorities/authorities.pl
index 6080478fde..1a7b8d635b 100755
--- a/authorities/authorities.pl
+++ b/authorities/authorities.pl
@@ -161,7 +161,7 @@ sub create_input {
     }
 
     $subfield_data{visibility} = "display:none;"
-        if ( $tagslib->{$tag}->{$subfield}->{hidden} and $value ne ''
+        if ( $tagslib->{$tag}->{$subfield}->{hidden} and $value eq ''
         or ( $value eq '' and !$tagslib->{$tag}->{$subfield}->{mandatory} ) );
 
     # it's an authorised field
@@ -381,7 +381,7 @@ sub build_tabs {
                             $subfield = '@';
                         }
                         next if ( $tagslib->{$tag}->{$subfield}->{tab} ne $tabloop );
-                        next if $tagslib->{$tag}->{$subfield}->{hidden} && $subfield ne '9';
+                        next if $tagslib->{$tag}->{$subfield}->{hidden} && $subfield ne '9' && !$value;
                         push(
                             @subfields_data,
                             &create_input(
@@ -396,7 +396,10 @@ sub build_tabs {
                             my $value    = $subfields[$subfieldcount][1];
                             next if ( length $subfield != 1 );
                             next if ( $tagslib->{$tag}->{$subfield}->{tab} ne $tabloop );
-                            next if $tagslib->{$tag}->{$subfield}->{hidden} && $subfield ne '9';
+                            next
+                                if $tagslib->{$tag}->{$subfield}->{hidden}
+                                && $subfield ne '9'
+                                && ( !$value || $tag eq '942' );
                             push(
                                 @subfields_data,
                                 &create_input(
diff --git a/authorities/detail.pl b/authorities/detail.pl
index dbe42f1bc4..595a357a9e 100755
--- a/authorities/detail.pl
+++ b/authorities/detail.pl
@@ -99,7 +99,6 @@ sub build_tabs {
                     if ( $field->tag() < 10 ) {
                         next
                             if ( $tagslib->{ $field->tag() }->{'@'}->{tab} ne $tabloop );
-                        next if ( $tagslib->{ $field->tag() }->{'@'}->{hidden} );
                         my %subfield_data;
                         $subfield_data{marc_lib}      = $tagslib->{ $field->tag() }->{'@'}->{lib};
                         $subfield_data{marc_value}    = $field->data();
@@ -114,8 +113,6 @@ sub build_tabs {
                             $subf[$i][0] = "@" unless defined $subf[$i][0];
                             next
                                 if ( $tagslib->{ $field->tag() }->{ $subf[$i][0] }->{tab} ne $tabloop );
-                            next
-                                if ( $tagslib->{ $field->tag() }->{ $subf[$i][0] }->{hidden} );
                             my %subfield_data;
                             $subfield_data{marc_lib} = $tagslib->{ $field->tag() }->{ $subf[$i][0] }->{lib};
                             if ( $tagslib->{ $field->tag() }->{ $subf[$i][0] }->{isurl} ) {