BAI2 Bank Statement Load - Bank Statement Code (DR's and CR's)

Hi all, I am currently implementing an automated book to bank reconciliation for multiple bank accounts using multiple banking organisation. I have discovered that there is not one single "Industry Standard"  bank statement and it is down to a banks own interpretation of what is an Industry standard format. As such I have had to move away from the SWIFT MT940 bank statements to the BAI2 statement format. Using SWIFT MT940 the bank statement import process had been customised to enable Credits to be marked with a preceding "-". However on the BAI2 bank statement each transactions is identified as