Property TWPBlockTemplateDB.TwoPassMasterClient : BooleanUnit: WPCTRTextProducerDBClass: WPCTRTextProducerDB.TWPBlockTemplateDBDescription If TwoPassMasterClient is true, first all rows of the master will be loaded and then all rows of the client will appended to the master rows by comparing the value of the field MasterIDField with the masters UUI field