If you don't have memory or any other way to link your actual "live" with previous ones, how does the situation where "conciousness" travels between bodies and does not actually differ? What identifies a consciousness A that was in the body X and traveled now to the body Y? How is it different from consciousness B that used to be in the body P and now lives in the body Q? How can you actually link them like that if there's no difference between them, so swapping those two consciousnesses between bodies Y and Q won't make any difference?