Punchout: req created with punchout item, as well as internal catalog item

We're on R12.1.3 and are implementing our first punchout store.  Since this is our first punchout, we are not familiar with Oracle functionality after we return from the punchout to iProc.  We have a few scenarios that we need clarified.

Create a req with an item from punchout:  PO is in Auto Create queue.

Create a req with item from punchout, then add an expense item from Rackspace catalog:  PO is in Auto Create queue for punchout line only.

Create a req with item from punchout, then add an inventory item from Rackspace catalog:  PO is in Auto Create queue for inventory item, but not punchout item line.