Did I miss something? I went to see them at Czerka corp and saw them run off. Talked to the Lieutenant, who basically blew me off. After finishing everything else on the station, I took my shuttle down to the surface and crashed. After killing everything in sight, exploring every corner including the old military complex I can't find hide nor hair, any suggestions?

From what I heard, they are gone forever. Just lie to grenn to reward if you want to.

You run into them on the way to the Czerka camp, so they're dead by the time you get back to the station.