Making changes to rates attached to an invoice
It is possible to make changes to costs and revenue once they have been attached to a sales or purchase invoice.
The invoice must be in the DRAFT state.
As long as the invoice that a rate is attached to is in the DRAFT state, it can be edited through the consignments module.
Rates attached to an invoice are not available through the rates screen in the finance module.
You can edit a rate that is attached to an invoice as you would edit a rate in the consignments module any other time.
When you save changes to a rate that is attached to an invoice, the invoice totals will automatically update if the rate value is changed.