Sales: Automatic Printing of invoice, packing slip and then label (in that order)

It would be very helpful if you could print invoices then packing slips then labels in that order - unfortunately, at the moment you can only print in this order if you choose print from the invoice Enter Sales window, but not if you print from the Print/Email Invoices tab - then, even though it shows the printing in the above order, it in fact prints invoices THEN labels THEN packing slips - not sure why ??  But some consistency would be helpful, and the logical order is invoices - packing slip - labels

Many thanks

'Printing Invoices Packing Slips and Labels"