No, look in Collapsed Prison on the way back to concealed prison, actually a much better spot for them. Really, you should be grinding in Concealed Prison or Uruga by now anyway, IMO.
@Kaini - maybe you just need a good slave driver, eeerrrrr Master, yeah, that's it, Master........lol. Come on over to Teva, we can lead you down the path to the dark side........