credit note for a designated invoice

[iarveta]

AX 2009
A credit note is created for a free-text invoice with a link to the invoice. After the credit note is posted the Customer transactions grid shows the reference from the invoice to the credit note. However, the amount of the credit is settled against the oldest invoice for the customer, not the one that has a reference to the credit note.
AR Parameters:
Updates tab: Credit invoicing is checked, Settlement type for credit notes = Designated transactions (and the help says: "The transactions will be settled with respect to a specific invoice."),
Settlement tab: Automatic settlement is checked.
Any other setting are needed?
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Thank you
Tanya

Можно отвечать по-русски или по-английски. Спасибо.