One Payment for multiple Invoices

coming back to this subject… I’m tinkering with using account_payment_clearing with clearing account
(using ‘manual’ and not ‘SEPA’ ).

First observation is that, in a bank statement, I can select individual payment lines and get both the account and amount value, if I select a payment group only the clearing account is pulled in. ? something wrong?

Second observation is that I needed to unset ‘party required’ on the clearing account, though in the statement the party is correctly selected to this account!

Also, from the same supplier, I can select invoices in ‘Payable’, but his supplier credit notes are in ‘Receivable’ making it seemingly impossible to get into the same payment group…
Strange, the account kind is ‘payable’ so why does the payment processing change that, the amount of the credit note is to be deducted from the payment)… Naturally this can’t work if any given party’s selected invoices amount don’t cover his selected credit notes, but that’s a batch processing error case that should be caught.

Otherwise, things seem they should be okay for ‘manual’, making it possible to create a back-end to edit LCR/BOR and even VCOM/FAE.