Index: lams_tool_preview/src/java/org/lamsfoundation/lams/tool/peerreview/service/PeerreviewServiceImpl.java
===================================================================
RCS file: /usr/local/cvsroot/lams_tool_preview/src/java/org/lamsfoundation/lams/tool/peerreview/service/PeerreviewServiceImpl.java,v
diff -u -r1.7.2.10 -r1.7.2.11
--- lams_tool_preview/src/java/org/lamsfoundation/lams/tool/peerreview/service/PeerreviewServiceImpl.java	12 Oct 2016 20:48:21 -0000	1.7.2.10
+++ lams_tool_preview/src/java/org/lamsfoundation/lams/tool/peerreview/service/PeerreviewServiceImpl.java	13 Oct 2016 02:08:27 -0000	1.7.2.11
@@ -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);