=== modified file 'dhis-2/dhis-api/src/main/java/org/hisp/dhis/chart/Chart.java'
--- dhis-2/dhis-api/src/main/java/org/hisp/dhis/chart/Chart.java	2013-03-19 16:20:36 +0000
+++ dhis-2/dhis-api/src/main/java/org/hisp/dhis/chart/Chart.java	2013-03-25 23:23:06 +0000
@@ -280,16 +280,6 @@
         return organisationUnitGroupSet != null && organisationUnitGroupSet.getOrganisationUnitGroups() != null;
     }
     
-    public void removeAllOrganisationUnits()
-    {
-        organisationUnits.clear();
-    }
-
-    public void removeAllDataSets()
-    {
-        dataSets.clear();
-    }
-
     public void removeAllDataElements()
     {
         dataElements.clear();
@@ -300,6 +290,21 @@
         indicators.clear();
     }
 
+    public void removeAllDataSets()
+    {
+        dataSets.clear();
+    }
+
+    public void removeAllPeriods()
+    {
+        periods.clear();
+    }
+
+    public void removeAllOrganisationUnits()
+    {
+        organisationUnits.clear();
+    }
+
     /**
      * Sets all dimensions for this chart.
      *
@@ -768,6 +773,9 @@
 
             removeAllDataSets();
             dataSets.addAll( chart.getDataSets() );
+            
+            removeAllPeriods();
+            periods.addAll( chart.getPeriods() );
 
             removeAllOrganisationUnits();
             organisationUnits.addAll( chart.getOrganisationUnits() );