Settle additional invoices with settled BOE

Hi,

I have this case: A customer has payed a $1000 invoice with $1700 BOE, and so there are $700 still open.

I would like to settle an additional sales invoice with that BOE. I could not find how to link the invoice to the BOE.

Is there to do that in AX2012 R2 CU7?

Regards,

Sara.