Hi Grant. Due to the underlying source code in Reckon Accounts this cannot be addressed in the core product. However, for many years there has been a process in place to accommodate this.
Essentially you create a clearing account (Type = Bank) which you use for all of your Bank / ABA file payments (one per bank account).
Use this account to pay suppliers / employees, and then write a cheque transaction (or transfer) to move the TOTAL of the ABA back into the clearing account. This will have 2 effects:
Your clearing account should always balance back to $0.00
The TOTAL of the ABA will be the only transaction in your actual bank account in Reckon, which will match your bank statement, making for a much easier reconciliation.