diff --git a/libreplan-business/src/main/java/org/libreplan/business/planner/entities/ITaskPositionConstrained.java b/libreplan-business/src/main/java/org/libreplan/business/planner/entities/ITaskPositionConstrained.java
index ed0bafa6f..087f234fb 100644
--- a/libreplan-business/src/main/java/org/libreplan/business/planner/entities/ITaskPositionConstrained.java
+++ b/libreplan-business/src/main/java/org/libreplan/business/planner/entities/ITaskPositionConstrained.java
@@ -31,5 +31,5 @@ public interface ITaskPositionConstrained {
 
     TaskPositionConstraint getPositionConstraint();
 
-    void explicityMoved(IntraDayDate date);
+    void explicityMoved(IntraDayDate startDate, IntraDayDate endDate);
 }
\ No newline at end of file
diff --git a/libreplan-business/src/main/java/org/libreplan/business/planner/entities/PositionConstraintType.java b/libreplan-business/src/main/java/org/libreplan/business/planner/entities/PositionConstraintType.java
index 79f96c4b9..be3ba846c 100644
--- a/libreplan-business/src/main/java/org/libreplan/business/planner/entities/PositionConstraintType.java
+++ b/libreplan-business/src/main/java/org/libreplan/business/planner/entities/PositionConstraintType.java
@@ -20,6 +20,8 @@
  */
 package org.libreplan.business.planner.entities;
 
+import org.libreplan.business.orders.entities.Order.SchedulingMode;
+
 
 /**
  * Enum with all possible ways of calculating the start of a task <br />
@@ -29,7 +31,7 @@ public enum PositionConstraintType {
     AS_SOON_AS_POSSIBLE(false, _("as soon as possible")) {
 
         @Override
-        public PositionConstraintType newTypeAfterMoved() {
+        public PositionConstraintType newTypeAfterMoved(SchedulingMode mode) {
             return START_NOT_EARLIER_THAN;
         }
 
@@ -41,8 +43,11 @@ public enum PositionConstraintType {
     START_NOT_EARLIER_THAN(true, _("start not earlier than")) {
 
         @Override
-        public PositionConstraintType newTypeAfterMoved() {
-            return START_NOT_EARLIER_THAN;
+        public PositionConstraintType newTypeAfterMoved(SchedulingMode mode) {
+            if(mode == SchedulingMode.FORWARD)
+                return START_NOT_EARLIER_THAN;
+            else
+                return FINISH_NOT_LATER_THAN;
         }
 
         @Override
@@ -53,7 +58,7 @@ public enum PositionConstraintType {
     START_IN_FIXED_DATE(true, _("start in fixed date")) {
 
         @Override
-        public PositionConstraintType newTypeAfterMoved() {
+        public PositionConstraintType newTypeAfterMoved(SchedulingMode mode) {
             return START_IN_FIXED_DATE;
         }
 
@@ -65,7 +70,7 @@ public enum PositionConstraintType {
     AS_LATE_AS_POSSIBLE(false, _("as late as possible")) {
 
         @Override
-        public PositionConstraintType newTypeAfterMoved() {
+        public PositionConstraintType newTypeAfterMoved(SchedulingMode mode) {
             return FINISH_NOT_LATER_THAN;
         }
 
@@ -77,8 +82,11 @@ public enum PositionConstraintType {
     FINISH_NOT_LATER_THAN(true, _("finish not later than")) {
 
         @Override
-        public PositionConstraintType newTypeAfterMoved() {
-            return FINISH_NOT_LATER_THAN;
+        public PositionConstraintType newTypeAfterMoved(SchedulingMode mode) {
+            if(mode == SchedulingMode.FORWARD)
+                return START_NOT_EARLIER_THAN;
+            else
+                return FINISH_NOT_LATER_THAN;
         }
 
         @Override
@@ -102,7 +110,7 @@ public enum PositionConstraintType {
         this.name = name;
     }
 
-    public abstract PositionConstraintType newTypeAfterMoved();
+    public abstract PositionConstraintType newTypeAfterMoved(SchedulingMode mode);
 
     public boolean isAssociatedDateRequired() {
         return dateRequired;
diff --git a/libreplan-business/src/main/java/org/libreplan/business/planner/entities/Task.java b/libreplan-business/src/main/java/org/libreplan/business/planner/entities/Task.java
index 2ba3993ba..060ac7d55 100644
--- a/libreplan-business/src/main/java/org/libreplan/business/planner/entities/Task.java
+++ b/libreplan-business/src/main/java/org/libreplan/business/planner/entities/Task.java
@@ -419,8 +419,9 @@ public class Task extends TaskElement implements ITaskPositionConstrained {
         }
     }
 
-    public void explicityMoved(IntraDayDate date) {
-        getPositionConstraint().explicityMovedTo(date);
+    public void explicityMoved(IntraDayDate startDate, IntraDayDate endDate) {
+        getPositionConstraint().explicityMovedTo(startDate, endDate,
+                getOrderElement().getOrder().getSchedulingMode());
     }
 
     public TaskPositionConstraint getPositionConstraint() {
diff --git a/libreplan-business/src/main/java/org/libreplan/business/planner/entities/TaskMilestone.java b/libreplan-business/src/main/java/org/libreplan/business/planner/entities/TaskMilestone.java
index 04fe416ac..f17812c8c 100644
--- a/libreplan-business/src/main/java/org/libreplan/business/planner/entities/TaskMilestone.java
+++ b/libreplan-business/src/main/java/org/libreplan/business/planner/entities/TaskMilestone.java
@@ -168,8 +168,9 @@ public class TaskMilestone extends TaskElement implements ITaskPositionConstrain
         return false;
     }
 
-    public void explicityMoved(IntraDayDate date) {
-        getPositionConstraint().explicityMovedTo(date);
+    public void explicityMoved(IntraDayDate startDate, IntraDayDate endDate) {
+        getPositionConstraint().explicityMovedTo(startDate, endDate,
+                getOrderElement().getOrder().getSchedulingMode());
     }
 
     public TaskPositionConstraint getPositionConstraint() {
diff --git a/libreplan-business/src/main/java/org/libreplan/business/planner/entities/TaskPositionConstraint.java b/libreplan-business/src/main/java/org/libreplan/business/planner/entities/TaskPositionConstraint.java
index afb9ae34e..b12bde999 100644
--- a/libreplan-business/src/main/java/org/libreplan/business/planner/entities/TaskPositionConstraint.java
+++ b/libreplan-business/src/main/java/org/libreplan/business/planner/entities/TaskPositionConstraint.java
@@ -23,6 +23,7 @@ package org.libreplan.business.planner.entities;
 import java.util.Date;
 
 import org.apache.commons.lang.Validate;
+import org.libreplan.business.orders.entities.Order.SchedulingMode;
 import org.libreplan.business.workingday.IntraDayDate;
 
 /**
@@ -57,10 +58,16 @@ public class TaskPositionConstraint {
                 .toDate() : null;
     }
 
-    public void explicityMovedTo(IntraDayDate date) {
-        Validate.notNull(date);
-        constraintType = constraintType.newTypeAfterMoved();
-        constraintDate = date;
+    public void explicityMovedTo(IntraDayDate startDate, IntraDayDate endDate,
+            SchedulingMode mode) {
+        Validate.notNull(startDate);
+        Validate.notNull(endDate);
+        constraintType = constraintType.newTypeAfterMoved(mode);
+        if (isConstraintAppliedToStart()) {
+            constraintDate = startDate;
+        } else {
+            constraintDate = endDate;
+        }
     }
 
     public IntraDayDate getConstraintDate() {
diff --git a/libreplan-webapp/src/main/java/org/libreplan/web/limitingresources/LimitingResourceQueueModel.java b/libreplan-webapp/src/main/java/org/libreplan/web/limitingresources/LimitingResourceQueueModel.java
index dc1a30164..07fff39aa 100644
--- a/libreplan-webapp/src/main/java/org/libreplan/web/limitingresources/LimitingResourceQueueModel.java
+++ b/libreplan-webapp/src/main/java/org/libreplan/web/limitingresources/LimitingResourceQueueModel.java
@@ -897,7 +897,7 @@ public class LimitingResourceQueueModel implements ILimitingResourceQueueModel {
             IntraDayDate endDate) {
         task.setIntraDayStartDate(startDate);
         task.setIntraDayEndDate(endDate);
-        task.explicityMoved(startDate);
+        task.explicityMoved(startDate, endDate);
     }
 
     private void addLimitingResourceQueueElementIfNeeded(LimitingResourceQueue queue,
diff --git a/libreplan-webapp/src/main/java/org/libreplan/web/planner/TaskElementAdapter.java b/libreplan-webapp/src/main/java/org/libreplan/web/planner/TaskElementAdapter.java
index d61f80339..c8124a48a 100644
--- a/libreplan-webapp/src/main/java/org/libreplan/web/planner/TaskElementAdapter.java
+++ b/libreplan-webapp/src/main/java/org/libreplan/web/planner/TaskElementAdapter.java
@@ -525,7 +525,8 @@ public class TaskElementAdapter {
                             .compareTo(PositionConstraintType.FINISH_NOT_LATER_THAN) == 0
                             || constraintType
                                     .compareTo(PositionConstraintType.AS_LATE_AS_POSSIBLE) == 0) {
-                        task.explicityMoved(toIntraDay(endDate));
+                        task.explicityMoved(taskElement.getIntraDayStartDate(),
+                                toIntraDay(endDate));
                     }
                 }
             }
@@ -1013,15 +1014,14 @@ public class TaskElementAdapter {
             public void moveTo(GanttDate newStart) {
                 if (taskElement instanceof ITaskPositionConstrained) {
                     ITaskPositionConstrained task = (ITaskPositionConstrained) taskElement;
+                    GanttDate newEnd = inferEndFrom(newStart);
                     if (task.getPositionConstraint()
                             .isConstraintAppliedToStart()) {
                         setBeginDate(newStart);
-                        task.explicityMoved(toIntraDay(newStart));
                     } else {
-                        GanttDate newEnd = inferEndFrom(newStart);
                         setEndDate(newEnd);
-                        task.explicityMoved(toIntraDay(newEnd));
                     }
+                    task.explicityMoved(toIntraDay(newStart), toIntraDay(newEnd));
                 }
             }