Approximate structure and functioning
Approximate structure and functioning can produce identical consciousness, slightly different consciousness, or very differnt consciousness all with the same ixperiencitness. But it can also change or vary the ixperiencitness in certain cases as well. Because of the complexity of the body reproducing identical structure and functioning is very unlikely either naturally or deliberately. To duplicate the structure and functioning of a conscious being, you have to have the skill and ability to do it and the knowledge about of what you are duplicating. Consequently, if exact duplication of structure functioning was necessary for the duplication of consciousness and ixperiencitness it would not likely ever happen in this universe with the knowledge we currently know about science. Of course, multiple universes and science fiction like technology might change that.
Luckily, exact duplication of the physical properties including exact structure and functioning is not necessary for the duplication of a specific consciousness with a specific ixperiencitness over a period of time. A number of different physipaths will produce the same awarepath. An even larger different continuum of physipaths will produce the same ixpepath. This concept is what makes life after death and immortality possible.