diff --git a/navalplanner-webapp/src/main/java/org/navalplanner/web/planner/order/SaveCommand.java b/navalplanner-webapp/src/main/java/org/navalplanner/web/planner/order/SaveCommand.java
index 30d5a900f..3d3d05ac3 100644
--- a/navalplanner-webapp/src/main/java/org/navalplanner/web/planner/order/SaveCommand.java
+++ b/navalplanner-webapp/src/main/java/org/navalplanner/web/planner/order/SaveCommand.java
@@ -122,6 +122,7 @@ public class SaveCommand implements ISaveCommand {
     private void saveTasksToSave() {
         for (TaskElement taskElement : state.getTasksToSave()) {
             taskElementDAO.save(taskElement);
+            dontPoseAsTransient(taskElement);
             if (taskElement instanceof Task) {
                 saveTask(taskElement, (Task) taskElement);
             }
@@ -131,6 +132,19 @@ public class SaveCommand implements ISaveCommand {
         }
     }
 
+    // newly added TaskElement such as milestones must be called
+    // dontPoseAsTransientObjectAnymore
+    private void dontPoseAsTransient(TaskElement taskElement) {
+        if (taskElement.isNewObject()) {
+            taskElement.dontPoseAsTransientObjectAnymore();
+        }
+        if (!taskElement.isLeaf()) {
+            for (TaskElement each : taskElement.getChildren()) {
+                dontPoseAsTransient(each);
+            }
+        }
+    }
+
     private void updateRootTaskPosition() {
         TaskGroup rootTask = state.getRootTask();
         final Date min = minDate(state.getTasksToSave());