Index: lams_common/src/java/org/lamsfoundation/lams/learningdesign/service/ExportToolContentService.java
===================================================================
diff -u -rb6a4593996e400b026f21ae6ffa796730cf0774c -r65ba66e376dba35c7a7fa216b4f0e9fa1b198b94
--- lams_common/src/java/org/lamsfoundation/lams/learningdesign/service/ExportToolContentService.java	(.../ExportToolContentService.java)	(revision b6a4593996e400b026f21ae6ffa796730cf0774c)
+++ lams_common/src/java/org/lamsfoundation/lams/learningdesign/service/ExportToolContentService.java	(.../ExportToolContentService.java)	(revision 65ba66e376dba35c7a7fa216b4f0e9fa1b198b94)
@@ -592,7 +592,8 @@
 			
 			//persist
 			trans.setTransitionId(null);
-			transitionDAO.insert(trans);
+			//leave it to learning design to save it.
+//			transitionDAO.insert(trans);
 		}
 		
 		
@@ -671,6 +672,10 @@
 		ld.setLessonStartDateTime(dto.getLessonStartDateTime());
 		ld.setLastModifiedDateTime(dto.getLastModifiedDateTime());
 
+		//set learning design to transition.
+		for(Transition trans:transList){
+			trans.setLearningDesign(ld);
+		}
 		ld.setTransitions(transList);
 
 		ld.setActivities(actList);