Complex Purchase Order (Work Order Confirmation)

Hi,

I wanted to know the following possibilities for a Complex Purchase Order (via Buyers Work Center);

1. Can you enter a receipt against items listed in the complex PO?
2. Can you make a Work Order Confirmation against the Complex PO?

When i am trying to enter a receipt for Complex PO (with receipt Matching enabled), it is not letting me create the receipt. and, When i am trying to make a Work Order for the Complex PO, it creates a Work Order Confirmation but keeps the Status in Processing (i am not able to change the status).

Please guide me.