Requisiton Order to PO converted, picked up from Blanket Order, Reference to Requisition Order possi

Hi,

It would be great if we get this resolved.

1) Blanket Order created for an Item.

2) Request Order created.

3) Request Order converted to Purchase Order with version having Processing Option #4 in Interface Tab set to 1.

4) PO got created with reference to Blanket Order in the Original Order number field which is expected and desired.

5) Request Order got closed, but either in the Purchase Order or Request Order, reference to the other one is missing.  We get only Blanket Order as original order # in the Purchase Order. 

How Is it possible to get a link to RO in PO keeping BO # as well ?