diff --git a/navalplanner-webapp/src/main/java/org/navalplanner/web/orders/ManageOrderElementAdvancesController.java b/navalplanner-webapp/src/main/java/org/navalplanner/web/orders/ManageOrderElementAdvancesController.java
index a832088df..e3ced9e16 100644
--- a/navalplanner-webapp/src/main/java/org/navalplanner/web/orders/ManageOrderElementAdvancesController.java
+++ b/navalplanner-webapp/src/main/java/org/navalplanner/web/orders/ManageOrderElementAdvancesController.java
@@ -153,6 +153,7 @@ public class ManageOrderElementAdvancesController extends
     public void openWindow(IOrderElementModel orderElementModel) {
         setOrderElementModel(orderElementModel);
         manageOrderElementAdvancesModel.initEdit(getOrderElement());
+        selectedAdvances.clear();
         selectedAdvances.addAll(getAdvanceAssignments());
         createAndLoadBindings();
         selectSpreadAdvanceLine();
@@ -160,6 +161,7 @@ public class ManageOrderElementAdvancesController extends
 
     public void openWindow(OrderElement orderElement) {
         manageOrderElementAdvancesModel.initEdit(orderElement);
+        selectedAdvances.clear();
         selectedAdvances.addAll(getAdvanceAssignments());
         createAndLoadBindings();
         selectSpreadAdvanceLine();