AP Vendor Remittance Advice Number is not incrementing

Within the AP Options - Entry-  we have checked the box for Increment Next Check No. When Changed During Printing under the Manual Check Quick Print header.  Our AP analyst has to manually advance this field when performing ACH payments.  Does anyone know how to correct the remittance advice number to advance automatically?  This advance feature was working for us previously but stopped when we created a new bank code for our new bank.