Index: lams_tool_preview/src/java/org/lamsfoundation/lams/tool/peerreview/service/PeerreviewServiceImpl.java
===================================================================
diff -u -r3b619df5e7e11dab1dc49859d23399a4b179c16f -rd560da20e7cb2fe1dae9201d0b4df9890fdbd71e
--- lams_tool_preview/src/java/org/lamsfoundation/lams/tool/peerreview/service/PeerreviewServiceImpl.java	(.../PeerreviewServiceImpl.java)	(revision 3b619df5e7e11dab1dc49859d23399a4b179c16f)
+++ lams_tool_preview/src/java/org/lamsfoundation/lams/tool/peerreview/service/PeerreviewServiceImpl.java	(.../PeerreviewServiceImpl.java)	(revision d560da20e7cb2fe1dae9201d0b4df9890fdbd71e)
@@ -495,10 +495,14 @@
 	    throw new DataMissingException("Unable to find default content for the peerreview tool");
 	}
 
+	// need to clone the Peer Review details, otherwise clearing the fields may update the database!
+	toolContentObj = Peerreview.newInstance(toolContentObj, toolContentId);
+	
 	// don't export following fields
 	for (LearnerItemRatingCriteria criteria : toolContentObj.getRatingCriterias()) {
 	    criteria.setToolContentId(null);
 	}
+	toolContentObj.setCreatedBy(null);
 
 	// set PeerreviewToolContentHandler as null to avoid copy file node in repository again.
 	toolContentObj = Peerreview.newInstance(toolContentObj, toolContentId);