Index: moodle/mod/lamslesson/lib.php
===================================================================
diff -u -r8bc3f6c4fd5b7348954b1026d365ca583a244e8d -rc04ae82310a4ce21cfd1988bf7362cebf6779f5b
--- moodle/mod/lamslesson/lib.php	(.../lib.php)	(revision 8bc3f6c4fd5b7348954b1026d365ca583a244e8d)
+++ moodle/mod/lamslesson/lib.php	(.../lib.php)	(revision c04ae82310a4ce21cfd1988bf7362cebf6779f5b)
@@ -100,11 +100,14 @@
 function lamslesson_update_instance($lamslesson) {
     global $DB;
 
+    //Get first the original record and check whether the sequence_id has changed of not
+    $originallamslesson  = $DB->get_record('lamslesson', array('id' => $lamslesson->instance));
     $lamslesson->timemodified = time();
     $lamslesson->id = $lamslesson->instance;
 
-    # You may have to add extra stuff in here #
-    lamslesson_add_lesson($lamslesson);
+    if ($originallamslesson->sequence_id != $lamslesson->sequence_id) {
+      lamslesson_add_lesson($lamslesson);
+    }
 
     return $DB->update_record('lamslesson', $lamslesson);
 }