diff --git a/mod/bigbluebuttonbn/classes/instance.php b/mod/bigbluebuttonbn/classes/instance.php
index bac9b80859e..3bdfb8d43e7 100644
--- a/mod/bigbluebuttonbn/classes/instance.php
+++ b/mod/bigbluebuttonbn/classes/instance.php
@@ -193,10 +193,20 @@ EOF;
      * @return null|self
      */
     public static function get_from_meetingid(string $meetingid): ?self {
+        global $DB;
+        // Here we try to manage cases where the meetingid was actually produced by the old plugin or we have actually
+        // changed the identifiers for the instance.
         $matches = self::parse_meetingid($meetingid);
+        $existinginstanceid = $DB->get_field('bigbluebuttonbn', 'id', ['meetingid' => $matches['meetingid']]);
+        if (empty($existinginstanceid)) {
+            debugging("The meeting id with ID ($meetingid) was not found in the bigbluebuttonbn table", DEBUG_DEVELOPER);
+            $existinginstanceid = $matches['instanceid']; // We try to "guess" the meeting id from its instance id. We should
+            // not really do that as this changes simply if we move the course elsewhere.
+            debugging("Trying to get the instanceid from the meeting ID. This will soon be deprecated", DEBUG_DEVELOPER);
+        }
+        $instance = self::get_from_instanceid($existinginstanceid);
 
-        $instance = self::get_from_instanceid($matches['instanceid']);
-
+        // Check for the group if any.
         if ($instance && array_key_exists('groupid', $matches)) {
             $instance->set_group_id($matches['groupid']);
         }
diff --git a/mod/bigbluebuttonbn/tests/instance_test.php b/mod/bigbluebuttonbn/tests/instance_test.php
index 8fe81cb2277..5163e13ebf0 100644
--- a/mod/bigbluebuttonbn/tests/instance_test.php
+++ b/mod/bigbluebuttonbn/tests/instance_test.php
@@ -157,6 +157,34 @@ class instance_test extends advanced_testcase {
         $this->assertEquals($cm->id, $instance->get_cm_id());
     }
 
+    /**
+     * Test getting Meeting ID from log as Log field (meetingid) is the full meeting id (with courseid, and bigbluebuttonid).
+     *
+     * @covers ::get_from_meetingid
+     */
+    public function test_get_from_meetingid_from_log(): void {
+        global $DB;
+
+        $this->resetAfterTest();
+        [
+            'record' => $record,
+            'course' => $course,
+            'cm' => $cm,
+        ] = $this->get_test_instance();
+        $instance = instance::get_from_cmid($cm->id);
+        $instance->set_group_id(1);
+        logger::log_meeting_joined_event($instance, 1);
+        $logs = $DB->get_records('bigbluebuttonbn_logs',
+            ['courseid' => $course->id, 'bigbluebuttonbnid' => $instance->get_instance_id()], 'timecreated DESC');
+        $log = end($logs);
+        $retrievedinstance = instance::get_from_meetingid(
+            $log->meetingid
+        );
+
+        $this->assertEquals($cm->instance, $retrievedinstance->get_instance_id());
+        $this->assertEquals($cm->id, $retrievedinstance->get_cm_id());
+    }
+
     /**
      * Ensure that invalid meetingids throw an appropriate exception.
      *
diff --git a/mod/bigbluebuttonbn/tests/task/upgrade_recordings_task_test.php b/mod/bigbluebuttonbn/tests/task/upgrade_recordings_task_test.php
index 24abb24f6e0..82e652a9370 100644
--- a/mod/bigbluebuttonbn/tests/task/upgrade_recordings_task_test.php
+++ b/mod/bigbluebuttonbn/tests/task/upgrade_recordings_task_test.php
@@ -124,6 +124,7 @@ class upgrade_recordings_task_test extends advanced_testcase {
         foreach ($matchesarray as $matches) {
             $this->expectOutputRegex('/' . implode('.*', $matches) . '/s');
         }
+        $this->resetDebugging(); // We might have debugging message that are sent by get_from_meetingid and can ignore them.
     }
 
     /**
@@ -186,6 +187,7 @@ class upgrade_recordings_task_test extends advanced_testcase {
         foreach ($matchesarray as $matches) {
             $this->expectOutputRegex('/' . implode('.*', $matches) . '/s');
         }
+        $this->resetDebugging(); // We might have debugging message that are sent by get_from_meetingid and can ignore them.
     }
 
     /**