 One of the biggest things with continuity in Red Dwarf is the fact that the ship can only sustain one hologram.When Rimmer returns to Red Dwarf to get more of the mind patch, there is a hologram in the room with the others.This could be considered miscontinuity, however, Rimmer's hologrammatic status could be projected by the holoship, allowing for Red Dwarf to sustain the other hologram.