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.
This thread is for the discussion of Less Wrong topics that have not appeared in recent posts. Feel free to rid yourself of cached thoughts by doing so in Old Church Slavonic. If a discussion gets unwieldy, celebrate by turning it into a top-level post.
If you're new to Less Wrong, check out this welcome post.