diff --git a/classes/structure.php b/classes/structure.php
index 6a16719..44c3302 100644
--- a/classes/structure.php
+++ b/classes/structure.php
@@ -440,8 +440,15 @@ class mod_attendance_structure {
             $sess->description = $description;
             $sess->lasttaken = 0;
             $sess->lasttakenby = 0;
-            $sess->studentscanmark = 0;
-            $sess->studentpassword = '';
+            if (!isset($sess->studentscanmark)) {
+                $sess->studentscanmark = 0;
+            }
+            if (!isset($sess->studentpassword)) {
+                $sess->studentpassword = '';
+            }
+            if (!isset($sess->subnet)) {
+                $sess->subnet = '';
+            }
 
             $event->add_record_snapshot('attendance_sessions', $sess);
             $event->trigger();
diff --git a/tests/behat/report.feature b/tests/behat/report.feature
index 37a993f..0163282 100644
--- a/tests/behat/report.feature
+++ b/tests/behat/report.feature
@@ -126,7 +126,7 @@ Feature: Visiting reports
       | id_sessiontype_1     | 1  |
       | id_groups            | Group1 |
     And I click on "id_submitbutton" "button"
-    Then I should see "3AM -  4AM"
+    Then I should see "3AM - 4AM"
     And "Group: Group1" "text" should exist in the "3AM - 4AM" "table_row"
 
     When I click on "Take attendance" "link" in the "3AM - 4AM" "table_row"
@@ -164,7 +164,7 @@ Feature: Visiting reports
       | id_sestime_starthour | 03 |
       | id_sestime_endhour   | 04 |
     And I click on "id_submitbutton" "button"
-    Then I should see "3AM -  4AM"
+    Then I should see "3AM - 4AM"
 
     When I click on "Take attendance" "link" in the "3AM - 4AM" "table_row"
     # Present
@@ -176,7 +176,7 @@ Feature: Visiting reports
       | id_sestime_starthour | 05 |
       | id_sestime_endhour   | 06 |
     And I click on "id_submitbutton" "button"
-    Then I should see "5AM -  6AM"
+    Then I should see "5AM - 6AM"
 
     When I follow "Report"
     And I click on "Summary" "link" in the "All" "table_row"