The game files for both levels of the droid factory (yes, there are two) as well as M4-78 world were left in the X-Box disc. Well, crunch time came, LucasArts shoveled the X-Box game out the door for the Christmas rush, and the droid factory went bye bye. That plotline was suppose to continue (but not finish) in here. All throughout the game it's been hinted at that HK-47 would use the Peragus Sonic Sensor to trace the droid factory and go all Rambo on his HK-50 clones. Just to give some history on this place, the droid factory was suppose to be a HK-47 solo mission that was playable in at this point in the game.
Part 50: Telos: 'HK-47, Please Shoot Me Repeatedly There Until I Die.'
