Why PO history no update on my dly invoice posting?

Hi All,

For some reason when I posted a MIRO against a PO (note, there is NO transaction of MIGO-101 taking place yet, and the PO is set as GR-based IV), there is no update in the PO history inside the PO (i.e. basically the whole PO history tab is blank).

Question 1: This invoice I posted is a delivery cost posting (i.e. DCln ==> PO history category). But may I know why there is no update in PO history tab and is this standard SAP behaviour on this?

Question 2: how do I make the PO history tab show the update of this delivery cost invoice posting even if there is NO MIGO-101 transaction taking place yet?

Thanks, Tuff