Debit Authorization in bill plan adding new bank

Summary

Debit Authorization number is not changing when adding new bank

Content

Hello:  We are new to AR ACH and are having difficulty with the authorization number changing in the bill plan when adding a new bank. The steps taken were to enter cancellation date and last active date the old debit authorization in customer's account; end date the old bank account, add new bank account, add new debit authorization.  When we go to payments in the bill plan and choose the new bank, the new authorization number should populate and it's not populating.  Does anyone know what we are missing or if has something to do with the ending or new