Try to put NOFILTER clause in Your SQL Select
Select * from mclMPFAC!CENSUSZN ;
Where CENSUSZN.VAR_ID = 0 ;
and CENSUSZN.ZONE = .nZone ;
Into Cursor csrCensusZn NOFILTER
Against Stupidity the Gods themselves Contend in Vain - Johann Christoph Friedrich von Schiller
The only thing normal about database guys is their tables.