Using Procurement Cards with POs and Matching

We are trying to setup our POs to utilize Procurement Cards. I noticed when I add the PCard to the PO, the Matching option gets changed to No Match and I am unable to change this. How do we know that the PO can be closed if we can't match to the PCard transaction that comes in from the bank and subsequently gets added to a voucher? Also, how can we prevent this PO from being tied to another PCard transaction if it is not matched or closed?