 This means the JMC never exists and the time drive would never have been found in the first place.In the episode Out of Time it was established that the time drive was only a "time" drive and not a space and time drive, so the crew could travel forward or backward in time but were still stuck in deep space.It was not explained in this episode how the time drive could transport them through space, or why, given that they could travel to 1963 Earth, they did not simply travel back to 22nd Century Earth as per their original plan.