Uploading Consciousness & Digital Immortality

It may be that it takes the same complex structure and functioning that occurs in the brain to produce a specific consciousness and ixperiencitness. Uploading aspects of the brain into a computer may or may not produce the same consciousness because the structure and the way the brain functions is so different from how a computer is structured and then functions. When there is the supposed up load of the mind there is several factors that need to be considered. If the mind of a person can be uploaded into a computer it could be uploaded into many different computers at the same time so the concept of multiplicity of the self as superimmortality predicts will occur. Second if uploading can occur then mistakes in the up load can also occur. Will at least some of the mistakes produce the same self? If there is an up load at one point in the life of a person could there not be this information for every point in the life of the person including future conscious versions of this person. Could this information also be applied at any time in the future?

To some thinkers it seems that the self is sort of a flowing changing fluid, that is transient, that has to be somehow extracted at only the current moment. And that storing, modifying, coping this information is not possible because there can be only one conscious version of a person at one time. There is however, no physical evidence of this.