Sounds like maybe the relevant code is that CFM tag file you have. That's the code that is actually formatting your data. If it's encrypted, you may be SOL. What is the source database? If it is SQLServer, you may try something like this for your csv_query value:
SELECT InvoiceNumber, TypeChk, ChartofAccounts,
Bank_name, Address1, Address2, Address3,
City, State, Zip, CheckDate,
Borrowername, Sellername,
SearchedPropertyAddress,
City1, State1, Zip1,
month(chkdate) + '/' + day(chkdate) + '/' + right(year(chkdate),2) AS ckd,
Amount, Description, Payee
If it's another RDBMS, you may be able to find the correct syntax to do the same basic thing. If you are pulling data from a CSV originaly, I'm not sure if you'll be able to do this.