I am having the same issue. My supplier just scalded me for not ordering products by part number/SKU on the first ever PO I sent using QBO. Your right-click-print-to-PDF is a great work around, and I was perfectly happy to use that, but seems that is doesn't work when you have a 17 line (in this case) purchase order, as it seems to only print 1 page (is that a universal issue, or just my end?). I cannot think of any rational reason why QBO would not submit an SKU to a supplier! Do I really have to manually put together POs outside of Quickbooks?? I guess I'll have to add the SKUs to the "Description" field for each product, since that's the one field that prints/emails over to the supplier?