When using multiple No. Series for Sales invoices it would be nice to be able to set default values for due dates, etc. For example, our standard number series is S-INV for sales invoice (due date is based on customer card default), but we use an alternative number series R-INV for Royalty Invoice, these are always due Net 10th of the month and have one line for royalty billing - it would be nice not to have to change this detail everytime we create a new R-INV invoice. Could even assign a template to the series.