Munge Definition

verb

(computing) To transform data in an undefined or unexplained manner.

Wiktionary

(computing) To add a spamblock to (an email address).

Wiktionary

(genealogy) To corrupt a record about an individual by erroneously merging in information about another individual.

It looks like this record is munged"”it has this person's birth date, but his father's death date.
Wiktionary