That was one of the first things I tried ... opening the tables before modifying the view; however, even with the tables open, I get the same result.

Does it matter how I created the view? I did not use the view designer when I created the view, I simply did the following from the command line:

CREATE VIEW flzipmaid as sele a.* from missacct a,;
 family b, person c where a.zip = ?m.z_szip;
 AND a.fname = ?m.z_sfname;
 AND (a.lname = ?m.z_slname OR c.maidenname = ?m.z_slname);
 AND a.acctno = b.acctno;
 AND b.personno = c.personno;
 AND b.famid # 'C' group by a.acctno

I figured that either way you created the view (whether command line or view designer) it was added to the database and could therefore be modified via the view designer. Is this not the case?