This is exactly what I was trying to explain, but obviously not all that well.
From an outside perspective the resurrected person is the same, and has not died.
From the perspective of the newly-resurrected person they have what seem continuous thoughts and memories, and thus they do not feel they have died.
But… from the point of view of the original person and their unique consciousness they are quite dead.
Imagine an instant snapshot is made of you: your thoughts, memories, personality, everything. Somehow this is transferred into an empty clone of you. You don’t suddenly start seeing the world through the clone’s eyes, and experiencing what he does. Obviously. And then suppose a big metal guy shoots you. Dead. You know what? No one else can tell the clone apart from the original you. Even the clone thinks he’s you. To him, he is you.
But you know he is not, and cannot be, because you are dead. The unique you is over with; the fact that some other carcass holds your old memories does not make it you.
But, if something is lost when the Cylon dies, then what is that something? I’d say it is as close to a soul as anything. My point is that your point is that the soul doesn’t download.
The uniqueness of the individual Cylon is lost when they die. Just like you and me. I guess we could call that uniqueness a ‘soul’ <grimmace>, but that is a ‘laden’ concept. Regardless, you are correct: that continuous existence does not download. I suggest that it cannot.
The more I think about this, the more convinced I am that I am correct. Now, it may not play out in the denouement of BSG, and may in fact be shown to be contrary to the BSG universe. But I still think I am right.
If you die (or transport in the Trek universe) you really die. The individual that was you is gone forever. What returns is identical in every way, except it is not the same you.
And after this mind-blowing existential exposition, I must abed, as it is 3:30am.