Imagine in the future, there is a technique that can upload your consciousness to a new container, either a biological body or digital space. Once we think of this scenario, we always feel that we are switched to a new body with our mind unchanged. I don't know the best possible way to implement such a technique, but I assume that uploading consciousness is copying some information from our brain to a target container. If that's true, the uploading is actually cloning, not moving.

When the cloning procedure is finished, the 2 instances should have the same memory and thought at that time but diverge afterward. My question is, what we will feel at that time?

To make it dramatic, assume that the original body is about to be over due to some diseases. Can we escape death by such kind of consciousness uploading?