Short answer: children were taken from internees, detainees, alien excludes, and assembled citizens of Japanese decent, and were not returned. They were passed off as white and you see them and their children every day. The period of time this occured was between 1942 and 1948, the numbers of people in general in captivity more than 120,000 and the opportunities to glom on to coveted items numerous.
Btw Their parents were occupying farmland much like the blacks after slavery.
