diff --git a/procedures/query/applyPOV.sql b/procedures/query/applyPOV.sql
index 1148acf8fb724c971748af1fb005656ea54a2d7e..a6608fa1e9c294ce8abd7ea54d6b14699f2ae34e 100644
--- a/procedures/query/applyPOV.sql
+++ b/procedures/query/applyPOV.sql
@@ -214,12 +214,17 @@ POV_LABEL: BEGIN
             IF o = "!=" AND refIdsTable IS NOT NULL THEN
                 SET existence_op = "NOT EXISTS";
             END IF;
-            SET sRefData = IF(vText IS NULL, ' UNION ALL SELECT DISTINCT domain_id, entity_id, _get_head_iversion(entity_id) AS _iversion, property_id FROM `reference_data` UNION ALL SELECT DISTINCT domain_id, entity_id, _iversion, property_id FROM `archive_reference_data`', IF(refIdsTable IS NULL, NULL, CONCAT(' UNION ALL SELECT DISTINCT domain_id, entity_id, _get_head_iversion(entity_id) AS _iversion, property_id FROM `reference_data` AS subdata WHERE ', existence_op, ' (SELECT 1 FROM `', refIdsTable, '` AS refIdsTable WHERE subdata.value=refIdsTable.id LIMIT 1) AND subdata.status != "REPLACEMENT" UNION ALL SELECT DISTINCT domain_id, entity_id, _iversion, property_id FROM `archive_reference_data` AS subdata WHERE ', existence_op, ' (SELECT 1 FROM `', refIdsTable, '` AS refIdsTable WHERE subdata.value=refIdsTable.id LIMIT 1) AND subdata.status != "REPLACEMENT"')));
+            SET sRefData = IF(vText IS NULL,
+                ' UNION ALL SELECT DISTINCT domain_id, entity_id, _get_head_iversion(entity_id) AS _iversion, property_id FROM `reference_data` UNION ALL SELECT DISTINCT domain_id, entity_id, _iversion, property_id FROM `archive_reference_data`',
+                IF(refIdsTable IS NULL,
+                    NULL,
+                    CONCAT(' UNION ALL SELECT DISTINCT domain_id, entity_id, _get_head_iversion(entity_id) AS _iversion, property_id FROM `reference_data` AS subdata WHERE ', existence_op, ' (SELECT 1 FROM `', refIdsTable, '` AS refIdsTable WHERE subdata.value=refIdsTable.id LIMIT 1) AND subdata.status != "REPLACEMENT" UNION ALL SELECT DISTINCT domain_id, entity_id, _iversion, property_id FROM `archive_reference_data` AS subdata WHERE ', existence_op, ' (SELECT 1 FROM `', refIdsTable, '` AS refIdsTable WHERE subdata.value=refIdsTable.id LIMIT 1) AND subdata.status != "REPLACEMENT"')));
             SET sDoubleData = IF(vText IS NULL, ' UNION ALL SELECT DISTINCT subdata.domain_id, subdata.entity_id, _get_head_iversion(subdata.entity_id) AS _iversion, subdata.property_id FROM `double_data` AS subdata UNION ALL SELECT DISTINCT domain_id, entity_id, _iversion, property_id FROM `archive_double_data` ', IF(vDouble IS NULL, NULL, CONCAT(' UNION ALL SELECT DISTINCT domain_id, entity_id, _get_head_iversion(entity_id), property_id FROM `double_data` AS subdata WHERE ', getDoubleWhereClause(vDouble,unit_sig,vDoubleStdUnit,stdUnit_sig,o), ' UNION ALL SELECT DISTINCT domain_id, entity_id, _iversion, property_id FROM `archive_double_data` AS subdata WHERE ', getDoubleWhereClause(vDouble, unit_sig, vDoubleStdUnit, stdUnit_sig, o))));
             SET sIntData = IF(vText IS NULL, ' UNION ALL SELECT DISTINCT subdata.domain_id, subdata.entity_id, _get_head_iversion(subdata.entity_id) AS _iversion, subdata.property_id FROM `integer_data` AS subdata UNION ALL SELECT DISTINCT domain_id, entity_id, _iversion, property_id FROM `archive_integer_data`', IF(vInt IS NULL AND vDoubleStdUnit IS NULL, NULL, CONCAT(' UNION ALL SELECT DISTINCT domain_id, entity_id, _get_head_iversion(entity_id) AS _iversion, property_id FROM `integer_data` AS subdata WHERE ', getDoubleWhereClause(vInt, unit_sig, vDoubleStdUnit, stdUnit_sig, o), ' UNION ALL SELECT DISTINCT domain_id, entity_id, _iversion, property_id FROM `archive_integer_data` AS subdata WHERE ', getDoubleWhereClause(vInt, unit_sig, vDoubleStdUnit, stdUnit_sig, o))));
             SET sDatetimeData = IF(vText IS NULL,' UNION ALL SELECT DISTINCT domain_id, entity_id, _get_head_iversion(entity_id) AS _iversion, property_id FROM `datetime_data` UNION ALL SELECT DISTINCT domain_id, entity_id, _iversion, property_id FROM `archive_datetime_data`', IF(vDateTime IS NULL, NULL, CONCAT(' UNION ALL SELECT DISTINCT domain_id, entity_id, _get_head_iversion(entity_id) AS _iversion, property_id FROM `datetime_data` AS subdata WHERE ',getDateTimeWhereClause(vDateTime,o), ' UNION ALL SELECT DISTINCT domain_id, entity_id, _iversion, property_id FROM `archive_datetime_data` AS subdata WHERE ',getDateTimeWhereClause(vDateTime,o))));
             SET sDateData = IF(vText IS NULL,' UNION ALL SELECT DISTINCT domain_id, entity_id, _get_head_iversion(entity_id) AS _iversion, property_id FROM `date_data` UNION ALL SELECT DISTINCT domain_id, entity_id, _iversion, property_id FROM `archive_date_data`', IF(vDateTimeDotNotation IS NULL, NULL, CONCAT(' UNION ALL SELECT DISTINCT domain_id, entity_id, _get_head_iversion(entity_id) AS _iversion, property_id FROM `date_data` AS subdata WHERE ', getDateWhereClause(vDateTimeDotNotation,o), ' UNION ALL SELECT DISTINCT domain_id, entity_id, _iversion, property_id FROM `archive_date_data` AS subdata WHERE ', getDateWhereClause(vDateTimeDotNotation,o))));
             SET sNullData = IF(vText IS NULL, ' UNION ALL SELECT DISTINCT domain_id, entity_id, _get_head_iversion(entity_id) AS _iversion, property_id FROM `null_data` UNION ALL SELECT DISTINCT domain_id, entity_id, _iversion, property_id FROM `archive_null_data`', NULL);
+        -- unversioned query --------------------------------------------
         ELSE
             SET sTextData = IF(vText IS NULL, 'SELECT DISTINCT domain_id, entity_id, property_id FROM `text_data`', CONCAT('SELECT DISTINCT domain_id, entity_id, property_id FROM `text_data` AS subdata WHERE subdata.value ',o,' ?'));
             SET sNameData = IF(vText IS NULL, ' UNION ALL SELECT DISTINCT domain_id, entity_id, property_id FROM `name_data`', CONCAT(' UNION ALL SELECT DISTINCT domain_id, entity_id, property_id FROM `name_data` AS subdata WHERE subdata.value ', o, ' ?'));
@@ -227,7 +232,11 @@ POV_LABEL: BEGIN
             IF o = "!=" AND refIdsTable IS NOT NULL THEN
                 SET existence_op = "NOT EXISTS";
             END IF;
-            SET sRefData = IF(vText IS NULL, ' UNION ALL SELECT DISTINCT domain_id, entity_id, property_id FROM `reference_data`', IF(refIdsTable IS NULL, NULL, CONCAT(' UNION ALL SELECT DISTINCT domain_id, entity_id, property_id FROM `reference_data` AS subdata WHERE ',existence_op ,' (SELECT 1 FROM `', refIdsTable, '` AS refIdsTable WHERE subdata.value=refIdsTable.id LIMIT 1) AND subdata.status != "REPLACEMENT"')));
+            SET sRefData = IF(vText IS NULL,
+                ' UNION ALL SELECT DISTINCT domain_id, entity_id, property_id FROM `reference_data`',
+                IF(refIdsTable IS NULL,
+                    NULL,
+                    CONCAT(' UNION ALL SELECT DISTINCT domain_id, entity_id, property_id FROM `reference_data` AS subdata WHERE ',existence_op ,' (SELECT 1 FROM `', refIdsTable, '` AS refIdsTable WHERE subdata.value=refIdsTable.id LIMIT 1) AND subdata.status != "REPLACEMENT"')));
             SET sDoubleData = IF(vText IS NULL, ' UNION ALL SELECT DISTINCT subdata.domain_id, subdata.entity_id, subdata.property_id FROM `double_data` AS subdata', IF(vDouble IS NULL, NULL, CONCAT(' UNION ALL SELECT DISTINCT domain_id, entity_id, property_id FROM `double_data` AS subdata WHERE ', getDoubleWhereClause(vDouble,unit_sig,vDoubleStdUnit,stdUnit_sig,o))));
             SET sIntData = IF(vText IS NULL, ' UNION ALL SELECT DISTINCT subdata.domain_id, subdata.entity_id, subdata.property_id FROM `integer_data` AS subdata', IF(vInt IS NULL AND vDoubleStdUnit IS NULL, NULL, CONCAT(' UNION ALL SELECT DISTINCT domain_id, entity_id, property_id FROM `integer_data` AS subdata WHERE ', getDoubleWhereClause(vInt, unit_sig, vDoubleStdUnit, stdUnit_sig, o))));
             SET sDatetimeData = IF(vText IS NULL,' UNION ALL SELECT DISTINCT domain_id, entity_id, property_id FROM `datetime_data`', IF(vDateTime IS NULL, NULL, CONCAT(' UNION ALL SELECT DISTINCT domain_id, entity_id, property_id FROM `datetime_data` AS subdata WHERE ',getDateTimeWhereClause(vDateTime,o))));