When you select a supplier and enter an invoice it would be better if the system kept you on this supplier to enter the next invoice without having to choose the same supplier from the list again. So the system would always default to the supplier you have previously just used.
Guest
KashFlow already does this. If you go onto the Supplier record (rather than use the Purchases section), and use the Create Purchase button on there, you do stay on that supplier to keep entering invoices.