Preface: 

A person who was helping me with our Odoo accounting, created 'Outstanding Payments' accounts for each bank/credit card...we have lots of them.

Procedure Description:

If I go to the Vendor Bills module and select

Create Manually, and proceed to fill out the form fields:

- Vendor

- Bill date

(skip the Recipient Bank field) 

and then add an invoice line with the 

- Label

- Account

- Price

fields filled out (label, account, price), I can then 'Save' and 'Confirm' the draft bill, after which I can Register Payment (it show the date paid and amount due as $0.00).

I understand that, pending reconciliation, there is an entry that goes into a transit account (Outstanding Payments or a suspense account).

Next, if I go to the Accounting Dashboard, I can see the bank account with an "outstanding payments..." link and can locate the payment there.  If, however, I look at the configuration for that bank account there is a 'Suspense Account' listed (in our case called 'Bank Suspense Account).  The vendor bill and amount, however, cannot be located there.  Instead, I'm able to find it in a different account called Outstanding Payments, with a different code number as well.

Question:

When manually creating a vendor bill and registering a payment, how does Odoo know which transit account to put the entry into (since it's not the one associated with the bank, as I would have expected)?