User blog comment:Godisme/The Shooting Star Project (Zero Mix)/@comment-1861226-20121128202905/@comment-1393830-20121128203258

Those three all died. Remember Giriko was cut in half, Tsukishima had a whole blasted through his chest and Kugo was killed by Ichigo, who then went to Soul Society to retrieve his dead body so he could bury the man he killed. And no, a Soul does not lose their memory on going to Soul Society. Most of those who were Humans once who are in Soul Society are just too young to remember their lives as Humans, and many of the Souls we see in the series were never Human.