Index: lams_tool_scratchie/src/java/org/lamsfoundation/lams/tool/scratchie/service/ScratchieServiceImpl.java
===================================================================
diff -u -r804dca72fa2ac638a9d3e2e66054d82688951c31 -r4fa7e1b76a14f19ba10520c8c7d5b5d5a8c7388b
--- lams_tool_scratchie/src/java/org/lamsfoundation/lams/tool/scratchie/service/ScratchieServiceImpl.java	(.../ScratchieServiceImpl.java)	(revision 804dca72fa2ac638a9d3e2e66054d82688951c31)
+++ lams_tool_scratchie/src/java/org/lamsfoundation/lams/tool/scratchie/service/ScratchieServiceImpl.java	(.../ScratchieServiceImpl.java)	(revision 4fa7e1b76a14f19ba10520c8c7d5b5d5a8c7388b)
@@ -2590,6 +2590,13 @@
 
 		if ((session.getGroupLeader() != null) && session.getGroupLeader().getUid().equals(user.getUid())) {
 		    session.setGroupLeader(null);
+		    session.setScratchingFinished(false);
+		    session.setSessionEndDate(null);
+		    session.setTimeLimitLaunchedDate(null);
+		    scratchieSessionDao.update(session);
+
+		    scratchieAnswerVisitDao.deleteByProperty(ScratchieAnswerVisitLog.class, "sessionId",
+			    session.getSessionId());
 		}
 
 		scratchieUserDao.removeObject(ScratchieUser.class, user.getUid());