Document Numbering in Draft

Hi All,

I am creating a series of invoices and saving each in draft. These are then used by the shipping department to prepare the shipmnents. Only when the shipments actually dispatch do we convert the draft to an actual invoice.

The problem we have is that when I save the invoice to draft it takes the next document number, but then the next invoice still takes the same number. It doesn't move to the next number unless I add the inovice.

Any suggestions?

Many thanks.