Matched Invoice Distributions in Payables for Invoice Price Varainces - Oracle 11i

I am unsure if the setup is correct in Oracle 11i and would like some feedback on this particular issue.

Matching of an Invoice to a Purchase Order that involves an Invoice Price Variance doesn't show the correct G/L Distribution Lines on the Invoice Distributions.

As an example a Stock Item is ordered where 100 units are ordered at .01c each to give a PO line price of $1. On receival of the stock items a journal is passed from the Purchasing module that debits the Stock account and credits the AP Accrual account for $1.

An invoice is received that states that the unit price was in fact .20c a unit with the invoice being $20 rather than the .01c per unit price that has been received in. The invoice is placed on hold because of the price difference of $19. The hold is released and the journal produced on invoice validation is to debit the AP Accrual account with $1, debit an Invoice Price Variance account with $19 and a credit to the Accounts Payable Control account for $20.