PeopleSoft 9.2 Expenses - Reimbursements via Payroll & Credit Card Payment to Bank

So if you are reimbursing expenses incurred by employees via Payroll but credit card transactions are being paid by the company directly to the bank (and the employee is using My Wallet), how does that work. I mean, at installations, you have to select where the reimbursements are being paid from, AP or Payroll. Since the bank is a supplier and not an employee, does the system direct those payments to AP even though you are reimbursing employees from Payroll?

Thanks,

Melissa