Index: lams_build/conf/slim/standalone.xml
===================================================================
diff -u -r4a13950e9817d6f085eba22ec4d685a7a09a36fc -rd411f14ac0e5cf4b3c477df36a2cae4b77cb84c1
--- lams_build/conf/slim/standalone.xml	(.../standalone.xml)	(revision 4a13950e9817d6f085eba22ec4d685a7a09a36fc)
+++ lams_build/conf/slim/standalone.xml	(.../standalone.xml)	(revision d411f14ac0e5cf4b3c477df36a2cae4b77cb84c1)
@@ -123,6 +123,16 @@
                 <append value="true" />
             </periodic-rotating-file-handler>
 
+            <periodic-rotating-file-handler name="LAMSASSESSMENTAUTOSAVE"
+                autoflush="true">
+                <formatter>
+                    <named-formatter name="LAMSAUDITPATTERN" />
+                </formatter>
+                <file relative-to="jboss.server.log.dir" path="autosave.log" />
+                <suffix value="'.'yyyy-MM-dd" />
+                <append value="true" />
+            </periodic-rotating-file-handler>
+
             <!-- ISO8601 date format -->
             <formatter name="HIBERNATEPATTERN">
                 <pattern-formatter pattern="%d{yyyy-MM-dd HH:mm:ss,SSS} [%t] %-5p %c - %m%n" />
@@ -262,7 +272,16 @@
                     <handler name="LAMSAUDIT" />
                 </handlers>
             </logger>
-            
+
+            <!-- Change level to TRACE to enable autosave logs -->
+            <logger category="org.lamsfoundation.lams.tool.assessment.service.AssessmentServiceImpl_autosave"
+                    use-parent-handlers="false">
+                <level name="INFO" />
+                <handlers>
+                    <handler name="LAMSASSESSMENTAUTOSAVE" />
+                </handlers>
+            </logger>
+
             <!-- On production change below settings to INFO -->
             
            	 <logger category="io.undertow.request">
@@ -489,4 +508,4 @@
         <socket-binding name="txn-recovery-environment" port="4712"/>
         <socket-binding name="txn-status-manager" port="4713"/>
     </socket-binding-group>
-</server>
+</server>
\ No newline at end of file
Index: lams_build/conf/standalone.xml
===================================================================
diff -u -r4a13950e9817d6f085eba22ec4d685a7a09a36fc -rd411f14ac0e5cf4b3c477df36a2cae4b77cb84c1
--- lams_build/conf/standalone.xml	(.../standalone.xml)	(revision 4a13950e9817d6f085eba22ec4d685a7a09a36fc)
+++ lams_build/conf/standalone.xml	(.../standalone.xml)	(revision d411f14ac0e5cf4b3c477df36a2cae4b77cb84c1)
@@ -152,6 +152,16 @@
                 <append value="true" />
             </periodic-rotating-file-handler>
 
+            <periodic-rotating-file-handler name="LAMSASSESSMENTAUTOSAVE"
+                autoflush="true">
+                <formatter>
+                    <named-formatter name="LAMSAUDITPATTERN" />
+                </formatter>
+                <file relative-to="jboss.server.log.dir" path="autosave.log" />
+                <suffix value="'.'yyyy-MM-dd" />
+                <append value="true" />
+            </periodic-rotating-file-handler>
+
             <!-- ISO8601 date format -->
             <formatter name="HIBERNATEPATTERN">
                 <pattern-formatter pattern="%d{yyyy-MM-dd HH:mm:ss,SSS} [%t] %-5p %c - %m%n" />
@@ -291,7 +301,16 @@
                     <handler name="LAMSAUDIT" />
                 </handlers>
             </logger>
-            
+
+            <!-- Change level to TRACE to enable autosave logs -->
+            <logger category="org.lamsfoundation.lams.tool.assessment.service.AssessmentServiceImpl_autosave"
+                    use-parent-handlers="false">
+                <level name="INFO" />
+                <handlers>
+                    <handler name="LAMSASSESSMENTAUTOSAVE" />
+                </handlers>
+            </logger>
+
             <!-- On production change below settings to INFO -->
             
            	 <logger category="io.undertow.request">
@@ -680,4 +699,4 @@
             <remote-destination host="localhost" port="25"/>
         </outbound-socket-binding>
     </socket-binding-group>
-</server>
+</server>
\ No newline at end of file
Index: lams_tool_assessment/src/java/org/lamsfoundation/lams/tool/assessment/service/AssessmentServiceImpl.java
===================================================================
diff -u -r466b430b11cd214ae9c8a4737ea5f6ed9253ed27 -rd411f14ac0e5cf4b3c477df36a2cae4b77cb84c1
--- lams_tool_assessment/src/java/org/lamsfoundation/lams/tool/assessment/service/AssessmentServiceImpl.java	(.../AssessmentServiceImpl.java)	(revision 466b430b11cd214ae9c8a4737ea5f6ed9253ed27)
+++ lams_tool_assessment/src/java/org/lamsfoundation/lams/tool/assessment/service/AssessmentServiceImpl.java	(.../AssessmentServiceImpl.java)	(revision d411f14ac0e5cf4b3c477df36a2cae4b77cb84c1)
@@ -157,6 +157,7 @@
 	implements IAssessmentService, ICommonAssessmentService, ToolContentManager, ToolSessionManager,
 	ToolRestManager, IQbToolService {
     private static Logger log = Logger.getLogger(AssessmentServiceImpl.class.getName());
+    private static Logger logAutosave = Logger.getLogger(AssessmentServiceImpl.class.getName() + "_autosave");
 
     private AssessmentDAO assessmentDao;
 
@@ -860,6 +861,21 @@
 			questionResult.getAnswerFloat(), questionDto.getAnswerFloat()) || !Objects.equals(
 			questionResult.getAnswer(), questionDto.getAnswer());
 
+	// this is for logging every autosave as requested by Imperial
+	// it produces a lot of logs, so it goes to a separate file
+	StringBuilder autosaveLogBuilder = null;
+	if (logAutosave.isTraceEnabled()) {
+	    autosaveLogBuilder = new StringBuilder("For learner ").append(assessmentResult.getUser().getUid())
+		    .append(" \"").append(assessmentResult.getUser().getLoginName()).append("\" for question ")
+		    .append(questionDto.getUid()).append(" for question result ").append(questionResult.getUid())
+		    .append(" answer was \"").append(questionResult.getAnswer()).append("\" and it is now \"")
+		    .append(questionDto.getAnswer()).append("\", answerBoolean was \"")
+		    .append(questionResult.getAnswerBoolean()).append("\" and it is now \"")
+		    .append(questionDto.getAnswerBoolean()).append("\", answerFloat was \"")
+		    .append(questionResult.getAnswerFloat()).append("\" and it is now \"")
+		    .append(questionDto.getAnswerFloat()).append("\"");
+	}
+
 	// store question answer values
 	questionResult.setAnswerBoolean(questionDto.getAnswerBoolean());
 	questionResult.setAnswerFloat(questionDto.getAnswerFloat());
@@ -887,6 +903,12 @@
 		isAnswerModified |= !Objects.equals(optionAnswer.getAnswerBoolean(), optionDto.getAnswerBoolean());
 	    }
 
+	    if (logAutosave.isTraceEnabled()) {
+		autosaveLogBuilder.append(", for option ").append(optionDto.getUid()).append(" option result ")
+			.append(optionAnswer.getUid()).append(" was \"").append(optionAnswer.getAnswerBoolean())
+			.append("\" and it is now \"").append(optionDto.getAnswerBoolean()).append("\"");
+	    }
+
 	    // store option answer values
 	    optionAnswer.setAnswerBoolean(optionDto.getAnswerBoolean());
 	    if (questionDto.getType() == QbQuestion.TYPE_ORDERING) {
@@ -898,6 +920,10 @@
 	    }
 	}
 
+	if (logAutosave.isTraceEnabled()) {
+	    logAutosave.trace(autosaveLogBuilder);
+	}
+
 	// store confidence levels entered by the learner
 	if (assessment.isEnableConfidenceLevels()) {
 	    isAnswerModified |= !Objects.equals(questionResult.getConfidenceLevel(), questionDto.getConfidenceLevel());