Does multi-period accounting work for PO-matched invoices only where the PO is set to 2-way match?

Summary:

I created a PO set to 3-way match with invoice match option set to Order. Accrual is at period end. When I matched this PO to an invoice and entered the MPA fields (Start Date, End Date and Accrual Account). When I created accounting for the invoice, the debit went to the PO charge account, instead of the Accrual account. When I ran the Create Multiperiod Accounting program, no entries were created.

I then created a PO set to 2-way match, with all details identical to above and the accounting on the invoice was correct and the Multiperiod accounting entries were generated.