=== modified file 'dhis-2/dhis-services/dhis-service-dxf2/src/main/java/org/hisp/dhis/dxf2/fieldfilter/DefaultFieldFilterService.java'
--- dhis-2/dhis-services/dhis-service-dxf2/src/main/java/org/hisp/dhis/dxf2/fieldfilter/DefaultFieldFilterService.java	2014-07-18 13:32:19 +0000
+++ dhis-2/dhis-services/dhis-service-dxf2/src/main/java/org/hisp/dhis/dxf2/fieldfilter/DefaultFieldFilterService.java	2014-07-18 13:33:31 +0000
@@ -285,6 +285,13 @@
             if ( child != null )
             {
                 child.setName( fieldKey );
+
+                // TODO fix ugly hack, will be replaced by custom field serializer/deserializer
+                if ( child.isSimple() && PeriodType.class.isInstance( (((SimpleNode) child).getValue()) ) )
+                {
+                    child = new SimpleNode( child.getName(), ((PeriodType) ((SimpleNode) child).getValue()).getName() );
+                }
+
                 complexNode.addChild( fieldValue.getPipeline().process( child ) );
             }
         }