This is less of liturgical interest and more of an administrative concern, but we have to keep those records straight:
14. The names of those confirmed, as well as the names of the minister, parents, and sponsors, and a notation of the place and date of the confirmation conferred, are to be entered into the registry of confirmations of the diocesan curia, or, where the conference of bishops or the diocesan bishop has so ordered, in a book to be kept in the parish archives. The pastor must inform the pastor of the recipient’s place of baptism that confirmation has been conferred, so that this may be recorded in the baptismal register, according to the requirements of the law.
15. If the pastor of the place was not present, the minister should promptly inform him of the confirmation, either personally or through a representative.
Catholic Sensibility 
Not such a minor requirement in areas (such as some parts of Mexico) where infant confirmations are conducted at cathedrals. Many a time I’ve had a engaged person come to me who isn’t sure of his/her confirmed status because the confirmation record keeping is pretty shoddy.