Problem using external id with TransactionSearch

Hi,

I am able to use the external id without problem in order to search for customers.  However, when I specify an external id when searching for sales order, it does not appear to work.

Should not the following return me just the sales order with external id = 2?  It's returning 500+ sales orders.

TransactionSearchBasic basic = new TransactionSearchBasic();  SearchEnumMultiSelectField soType = new SearchEnumMultiSelectField();  soType.setSearchValue(new String[1]);  soType.setSearchValue(0, TransactionType.__salesOrder);  soType.setOperator(SearchEnumMultiSelectFieldOperator.anyOf);  basic.setType(soType);    SearchMultiSelectField extId = new SearchMultiSelectField();  extId.setOperator(SearchMultiSelectFieldOperator.anyOf);  RecordRef[] recordRefs = new RecordRefs(1);  RecordRef recordRef = new RecordRef();  recordRef.setExternalId("2");  recordRefs[i] = recordRef;  extId.setSearchValue(recordRefs);  basic.setExternalId(extId);    SearchResult result = _port.search(basic);