To change the payment method of a bill payment from Other to Paid via Bill.com you'll need to void the offline payment and schedule a live payment.

Void an offline payment

1. Select Vendors in the navigation menu
2. Select the vendor name
3. Select Payments
4. Select the offline payment to void
5. Select Void payment
6. Select Yes to confirm

The bill will now return to Unpaid status so you can schedule a new payment.