3811292 - Can the last 4 digits of the air card used be written to the PNR as a reporting field?

I would like to have the last 4 digits of a credit card written to the PNR. We have a ghost card, but also allow the use of a personal card.  

Site uses ghost card for air but users can also use a personal card. Customer would like to write last 4 digits of card number to a reporting field for tracking purposes. , KBA , CON-SRV-TRV-ADM-FIN , Finishing Template Editor , CON-CA-CMP-MCF , Manage Custom Fields , Problem