Is it possible to create Requisition Orders from SOs and still keep the link to the SO once the PO i

Good afternoon,

Is it possible to keep a link between a SO and a PO if the SOs auto-create requisition orders(OR) instead of POs (OP)?  This is done in order to combine different requisitions together before creating one PO (for special supplier pricing or freight advantages) with the link back to the SO.

It is okay if the SO has to be manually changed after the PO is created from the many requisitions...