Combine Sepa payments (credit memos and invoices) xml.file

Toma

When combining SEPA -payments on "Bank payments to send" scrn, and the vendor have eq. invoice 1000 € and credit memo 500€. NAV combines those as it should, but the problem is that xml- file doesn´t include any invoice details such as sums, invoice messages etc.

What should do that those invoice details comes to the file (RmtInf part is missing from file)? Do I need code or is this fixable with parameters or something else?

Thanks for any help!