Index: lams_central/src/java/org/lamsfoundation/lams/authoring/service/AuthoringService.java
===================================================================
diff -u -r3e5c3c37a42949365e77ee650335790f6b43c718 -rc82a07c323413bc81bf2c072b7dbeafa6d9e3776
--- lams_central/src/java/org/lamsfoundation/lams/authoring/service/AuthoringService.java	(.../AuthoringService.java)	(revision 3e5c3c37a42949365e77ee650335790f6b43c718)
+++ lams_central/src/java/org/lamsfoundation/lams/authoring/service/AuthoringService.java	(.../AuthoringService.java)	(revision c82a07c323413bc81bf2c072b7dbeafa6d9e3776)
@@ -474,7 +474,7 @@
 	/**
 	 * @see org.lamsfoundation.lams.authoring.service.IAuthoringService#finishEditOnFly(java.lang.Long, java.lang.Integer)
 	 */
-	public String finishEditOnFly(Long learningDesignID, Integer userID) throws IOException {
+	public String finishEditOnFly(Long learningDesignID, Integer userID, boolean cancelled) throws IOException {
 		FlashMessage flashMessage = null;
 		Lesson lesson = null;
 
@@ -515,7 +515,10 @@
 					design = removeTempSystemGate(gate, design); /* remove inputted system gate */
 				}
 
-				lessonService.performMarkLessonUncompleted(lesson.getLessonId()); /* the lesson may now have additional activities on the end, so clear any completed flags */
+				// LDEV-1899 only mark learners uncompleted if a change was saved
+				if (!cancelled) {
+				    lessonService.performMarkLessonUncompleted(lesson.getLessonId()); /* the lesson may now have additional activities on the end, so clear any completed flags */
+				}
 
 				initialiseToolActivityForRuntime(design, lesson);
 				learningDesignDAO.insertOrUpdate(design);
Index: lams_central/src/java/org/lamsfoundation/lams/authoring/service/IAuthoringService.java
===================================================================
diff -u -rb82c7d5b3659b3eaaba97fac70acc57c6aef720a -rc82a07c323413bc81bf2c072b7dbeafa6d9e3776
--- lams_central/src/java/org/lamsfoundation/lams/authoring/service/IAuthoringService.java	(.../IAuthoringService.java)	(revision b82c7d5b3659b3eaaba97fac70acc57c6aef720a)
+++ lams_central/src/java/org/lamsfoundation/lams/authoring/service/IAuthoringService.java	(.../IAuthoringService.java)	(revision c82a07c323413bc81bf2c072b7dbeafa6d9e3776)
@@ -303,10 +303,11 @@
 	 * 
 	 * @param learningDesignID The learning_design_id of the design for which editing has finished.
 	 * @param userID user_id of the User who has finished editing the design.
+	 * @param cancelled flag specifying whether user cancelled or saved the edit
 	 * @return wddx packet.
 	 * @throws IOException
 	 */
-	public String finishEditOnFly(Long learningDesignID, Integer userID) throws IOException;
+	public String finishEditOnFly(Long learningDesignID, Integer userID, boolean cancelled) throws IOException;
 	
 	/**
 	 * 
Index: lams_central/src/java/org/lamsfoundation/lams/authoring/web/AuthoringAction.java
===================================================================
diff -u -rfdbf7a3cfb10831b1ac581efa42807d3207a71ff -rc82a07c323413bc81bf2c072b7dbeafa6d9e3776
--- lams_central/src/java/org/lamsfoundation/lams/authoring/web/AuthoringAction.java	(.../AuthoringAction.java)	(revision fdbf7a3cfb10831b1ac581efa42807d3207a71ff)
+++ lams_central/src/java/org/lamsfoundation/lams/authoring/web/AuthoringAction.java	(.../AuthoringAction.java)	(revision c82a07c323413bc81bf2c072b7dbeafa6d9e3776)
@@ -143,8 +143,9 @@
 		IAuthoringService authoringService = getAuthoringService();
 		try {
 			Long learningDesignID = WebUtil.readLongParam(request,"learningDesignID",false);
+			boolean cancelled = WebUtil.readBooleanParam(request, "cancelled", false);
 			
-			wddxPacket = authoringService.finishEditOnFly(learningDesignID, getUserId());
+			wddxPacket = authoringService.finishEditOnFly(learningDesignID, getUserId(), cancelled);
 			
 		} catch (Exception e) {
 			wddxPacket = handleException(e, "getLearningDesignDetails", authoringService, true).serializeMessage();