diff --git a/libreplan-business/src/main/java/org/libreplan/business/orders/entities/OrderElement.java b/libreplan-business/src/main/java/org/libreplan/business/orders/entities/OrderElement.java
index 297f8a4de..a8e3cb3d2 100644
--- a/libreplan-business/src/main/java/org/libreplan/business/orders/entities/OrderElement.java
+++ b/libreplan-business/src/main/java/org/libreplan/business/orders/entities/OrderElement.java
@@ -297,10 +297,10 @@ public abstract class OrderElement extends IntegrationEntity implements
                 //we have to remove the TaskSource which contains a TaskGroup instead of TaskElement
                 removeTaskSource(result);
             }
-            if(getOnDBTaskSource() != getTaskSource()) {
+            if(currentTaskSourceIsNotTheSame()) {
                 //this element was unscheduled and then scheduled again. Its TaskSource has
                 //been recreated but we have to remove the old one.
-                if(getParent().getTaskSource() == getParent().getOnDBTaskSource()) {
+                if(!getParent().currentTaskSourceIsNotTheSame()) {
                     //we only remove the TaskSource if the parent is not in the same situation.
                     //In case the parent is in the same situation, it will remove the related
                     //TaskSources in children tasks.
@@ -314,7 +314,7 @@ public abstract class OrderElement extends IntegrationEntity implements
             if (wasASchedulingPoint()) {
                 result.add(taskSourceRemoval());
             }
-            if(getOnDBTaskSource() != getTaskSource()) {
+            if(currentTaskSourceIsNotTheSame()) {
                 //all the children of this element were unscheduled and then scheduled again,
                 //its TaskSource has been recreated but we have to remove the old one.
                 result.add(taskSourceRemoval());
@@ -346,6 +346,10 @@ public abstract class OrderElement extends IntegrationEntity implements
                 .getSchedulingStateType();
     }
 
+    protected boolean currentTaskSourceIsNotTheSame() {
+        return getOnDBTaskSource() != getTaskSource();
+    }
+
     private List<TaskSourceSynchronization> childrenSynchronizations() {
         List<TaskSourceSynchronization> childrenOfGroup = new ArrayList<TaskSourceSynchronization>();
         for (OrderElement orderElement : getSomewhatScheduledOrderElements()) {
@@ -427,7 +431,7 @@ public abstract class OrderElement extends IntegrationEntity implements
         }
     }
 
-    protected TaskSource getOnDBTaskSource() {
+    private TaskSource getOnDBTaskSource() {
         SchedulingDataForVersion schedulingDataForVersion = getCurrentVersionOnDB();
         return schedulingDataForVersion.getTaskSource();
     }