You won't "migrate", it will just be a copy of you. Your conscious perspective will not transfer to the copy of you. You will still be bound to the original, even if a simulacrum of your mind is created.
You can "migrate" with a technique such as gradual replacement, which in a simplified form replaces one physical neuron at a time with an uplink to a virtual neuron, and waits for your thoughts to equalize. Realistically you'd do clusters of neurons.
And how do you plan to deal with the latency of connecting the neurons of your brain to a remote virtual uplink? The speed of light limits the size of a virtual brain that is able to function in the same manner as a biological one. The truth is our understanding of consciousness and its neurological foundation is nowhere close to the level that would allow us to recreate it artificially. We don't even know how it works normally. It will not happen in your lifetime and you are going to die like the rest of us, and very likely this will not change even in the next thousand years.
