=== modified file 'dhis-2/dhis-web/dhis-web-light/src/main/java/org/hisp/dhis/light/namebaseddataentry/action/SaveProgramStageFormAction.java'
--- dhis-2/dhis-web/dhis-web-light/src/main/java/org/hisp/dhis/light/namebaseddataentry/action/SaveProgramStageFormAction.java	2013-02-10 13:06:34 +0000
+++ dhis-2/dhis-web/dhis-web-light/src/main/java/org/hisp/dhis/light/namebaseddataentry/action/SaveProgramStageFormAction.java	2013-03-18 08:35:00 +0000
@@ -93,7 +93,7 @@
     {
         this.dataElementService = dataElementService;
     }
-    
+
     private PatientService patientService;
 
     public PatientService getPatientService()
@@ -421,7 +421,7 @@
         List<PatientDataValue> patientDataValues = new ArrayList<PatientDataValue>();
 
         patient = patientService.getPatient( patientId );
-        
+
         if ( programStageSectionId != null && programStageSectionId != 0 )
         {
             this.programStageSection = programStageSectionService.getProgramStageSection( this.programStageSectionId );
@@ -472,11 +472,11 @@
 
                 prevDataValues.put( key, value );
                 prevDataValues.put( "CB" + dataElement.getId(), parameterMap.get( "CB" + dataElement.getId() ) );
-                
+
                 // build patient data value
                 PatientDataValue patientDataValue = new PatientDataValue( programStageInstance, dataElement,
                     new Date(), value );
-                
+
                 String providedElseWhereValue = parameterMap.get( "CB" + dataElementId );
 
                 if ( providedElseWhereValue != null )
@@ -543,10 +543,17 @@
             }
             else
             {
-                previousPatientDataValue.setValue( patientDataValue.getValue() );
-                previousPatientDataValue.setTimestamp( new Date() );
-                previousPatientDataValue.setProvidedElsewhere( patientDataValue.getProvidedElsewhere() );
-                patientDataValueService.updatePatientDataValue( previousPatientDataValue );
+                if ( patientDataValue.getValue().trim().equals( "" ) )
+                {
+                    patientDataValueService.deletePatientDataValue( previousPatientDataValue );
+                }
+                else
+                {
+                    previousPatientDataValue.setValue( patientDataValue.getValue() );
+                    previousPatientDataValue.setTimestamp( new Date() );
+                    previousPatientDataValue.setProvidedElsewhere( patientDataValue.getProvidedElsewhere() );
+                    patientDataValueService.updatePatientDataValue( previousPatientDataValue );
+                }
             }
 
         }
@@ -566,7 +573,7 @@
         {
             Collection<ProgramValidationResult> validationResults = programValidationService.validate( validations,
                 programStageInstance );
-            
+
             for ( ProgramValidationResult validationResult : validationResults )
             {
                 if ( validationResult != null )

=== modified file 'dhis-2/dhis-web/dhis-web-light/src/main/java/org/hisp/dhis/light/singleevent/action/SaveSingleEventAction.java'
--- dhis-2/dhis-web/dhis-web-light/src/main/java/org/hisp/dhis/light/singleevent/action/SaveSingleEventAction.java	2013-03-13 14:17:15 +0000
+++ dhis-2/dhis-web/dhis-web-light/src/main/java/org/hisp/dhis/light/singleevent/action/SaveSingleEventAction.java	2013-03-18 08:35:00 +0000
@@ -314,7 +314,7 @@
     }
 
     @Override
-    @SuppressWarnings("unchecked")
+    @SuppressWarnings( "unchecked" )
     public String execute()
         throws Exception
     {
@@ -426,13 +426,20 @@
                 }
                 else if ( patientDataValue != null && value != null )
                 {
-                    patientDataValue.setValue( value );
-
-                    patientDataValue.setTimestamp( new Date() );
-
-                    patientDataValue.setProvidedElsewhere( false );
-
-                    patientDataValueService.updatePatientDataValue( patientDataValue );
+                    if ( value.trim().equals( "" ) )
+                    {
+                        patientDataValueService.deletePatientDataValue( patientDataValue );
+                    }
+                    else
+                    {
+                        patientDataValue.setValue( value );
+
+                        patientDataValue.setTimestamp( new Date() );
+
+                        patientDataValue.setProvidedElsewhere( false );
+
+                        patientDataValueService.updatePatientDataValue( patientDataValue );
+                    }
                 }
             }
         }