Here's the trigger on one of them:
CREATE TRIGGER "tblCustomerName_DTrig" ON dbo.tblCustomerName FOR DELETE AS
SET NOCOUNT ON
/* * CASCADE DELETES TO 'tblCustomerChallenge' */
DELETE tblCustomerChallenge FROM deleted, tblCustomerChallenge WHERE deleted.strCustID = tblCustomerChallenge.strCustID
/*...