Page Comparison

Process a combination of vendor credit and vendor bill, resulting in a payment from a vendor

Key is to first apply the credit to the bill, and only process the remainder of the credit: Edit the Vendor Credit in a separate tab. On the Apply subtab, select the bill(s). Go back to the bank statement and open the popup again. Now you should be able to only select the vendor credit.

Process a combination of credit memo and invoice, resulting in a refund to the customer

Key is to first apply the credit memo to the invoice, and only process the remainder of the credit memo: Edit the Credit memo in a separate tab. On the Apply subtab, select the invoice(s). Go back to the bank statement and open the popup again. Now you should be able to only select the credit memo.

Process a payment for a manually created Journal with multiple AR/AP lines (multiple payable/receivable lines listed in 1 Journal Entry)

Create an invoice or vendor bill for each payable/receivable line.