diff --git a/navalplanner-webapp/src/main/java/org/navalplanner/web/planner/order/OrderPlanningModel.java b/navalplanner-webapp/src/main/java/org/navalplanner/web/planner/order/OrderPlanningModel.java
index 2594c49a7..7098f42c5 100644
--- a/navalplanner-webapp/src/main/java/org/navalplanner/web/planner/order/OrderPlanningModel.java
+++ b/navalplanner-webapp/src/main/java/org/navalplanner/web/planner/order/OrderPlanningModel.java
@@ -1092,7 +1092,7 @@ public abstract class OrderPlanningModel implements IOrderPlanningModel {
             SortedMap<LocalDate, Map<Resource, Integer>> orderDayAssignmentsGrouped = groupDayAssignmentsByDayAndResource(orderDayAssignments);
 
             List<DayAssignment> resourcesDayAssignments = new ArrayList<DayAssignment>();
-            for (Resource resource : order.getResources()) {
+            for (Resource resource : reloadResources(order.getResources())) {
                 resourcesDayAssignments.addAll(resource.getAssignments());
             }
             SortedMap<LocalDate, Map<Resource, Integer>> resourceDayAssignmentsGrouped = groupDayAssignmentsByDayAndResource(resourcesDayAssignments);
@@ -1145,6 +1145,17 @@ public abstract class OrderPlanningModel implements IOrderPlanningModel {
             chart.setHeight("150px");
         }
 
+        private List<Resource> reloadResources(
+                Collection<? extends Resource> resources) {
+            List<Resource> result = new ArrayList<Resource>();
+            for (Resource each : resources) {
+                Resource reloaded = resourceDAO
+                        .findExistingEntity(each.getId());
+                result.add(reloaded);
+            }
+            return result;
+        }
+
         private void resetMaps() {
             mapOrderLoad.clear();
             mapOrderOverload.clear();