Interdivisional Balancing not working for a single Vendor.

We utilize Interdivisional balancing and it works for all of our divisions with different bank accounts except for 1 specific Vendor.  The bank account this is sent to is one of our more utilized bank accounts and we don't see to have this issue anywhere else.  These are the steps that are being taken:

Accounts Payable > Process Vouchers > New Batch > Enter Vouchers > Type of voucher = Debit memo > create new > Enter Vendor > Enter Inv # > Enter Amt > Enter Class # 300 > Choose correct bank account > Enter Correct GL # in next tab > Save.  Type of Voucher = Credit Memo > create New > Enter Vendor > Enter Inv # > Enter Amt > Enter Class # 000 > Enter correct bank account > Enter correct GL # in next tab > Save > Register / Post.  When the Register opens there is no IDB showing and Accounting is needing to do a journal entry to fix this.

Apply Payments & Memo's: AP module > Create New batch > Apply payments > Choose Memo's under the Apply From > Enter Vendor > search documents > Show open vouchers apply > Apply memo. Do this for both the DM and CM created.

Has anyone seen this?  If yes, what was the fix?  Please advise.