We developed a workaround to this.

When we receive, we create a bill using PO XXXXX This is the QB PO number with PO in front of it - so if your original Purchase order number was 12345, we create a bill and use  PO 12345 as the invoice number.

Then, when the actual invoice arrives, you just enter the "12345" in the search bar. it will pull up the bill with PO 12345 (as long as you left a space between PO and 12345).  Now, we compare the receiving bill with the actual invoice to see if it matches. If it does, we update the PO 12345 with the actual invoice number.

Now we know the invoice is matched and ready to pay.  If it does not match, we enter ** in front of the PO 12345 so we know there is an issue that needs to be resolved prior to paying.

It's not perfect, but it allows us to have more real-time inventory and understand what is on our floor prior to invoice.

Hope that helps