Vendor Selection when creating a PO from the invoice

When you create POs from the invoice and for some reason there is no vendor associated with the line item or you decide you want to order it from a different vendor, there is no way to change the vendor once selected before the PO is actually created. So if you accidentally select the wrong one you cna’t change it until the PO is actually created. So it would be great if we could reselect the vendor prior to hitting the create POs button when creating POs from an invoice. It’s proably the same for creating them from Quotes