diff --git a/libreplan-webapp/src/main/java/org/libreplan/web/planner/order/PlanningStateCreator.java b/libreplan-webapp/src/main/java/org/libreplan/web/planner/order/PlanningStateCreator.java
index b6a596e17..3f4cf28b0 100644
--- a/libreplan-webapp/src/main/java/org/libreplan/web/planner/order/PlanningStateCreator.java
+++ b/libreplan-webapp/src/main/java/org/libreplan/web/planner/order/PlanningStateCreator.java
@@ -909,7 +909,9 @@ public class PlanningStateCreator {
 
         private void reattachCriterions(Set<Criterion> criterions) {
             for (Criterion each : criterions) {
-                criterionDAO.reattachUnmodifiedEntity(each);
+                if (!Hibernate.isInitialized(each)) {
+                    criterionDAO.reattachUnmodifiedEntity(each);
+                }
             }
         }