Thanks, Malcom, I'm not sure I would have thought to look there. Here it is (edited for a little confidentiality again)
{Trans.Cusip} = "317xxxxxx" and
{Trans.TranType} = "TR" and
{Trans.MnyAmt} > 0.00 and
{Acct.AC9} < 8xxxxxxxx.00 and
{Trans.EffDate} in Date (1997, 06, 24) to Date (1997, 12, 17)
Those date fields {Trans.EffDate} get changed for each run.