Your consciousness (the cloned one of the two) experiences a jump back in time, but the universe history it observes between 6 and 8 for the second time diverges from what it observed the first time, because it itself now acts differently.

There's no more an actual backward jump in time than there would be in case Omega just implanted (accurate, predicted) memories of 6 through 8 pm in your brain at 6pm, without any duplications.