What happened to my ranks?

[Jack I]

Ranks for Trivia, Arcade, and ranks awarded during contests are always reset each time a new batch of winners is selected, and it has always been this way on the sites. If you would like your ranks back, all you need to do is simply join into the contests and win again.

Just look at is this way, if everyone got to keep them you could only win once and then you could never win again, and what fun would that be? ;-)