Subtraction mathematics arguments for awaretheory

One of the ideas against awaretheory is the "its only a replica argument" which simply put is that a replica of a person is not the same person as the original. Which, if the definition of a person is "a continuous singular body through time" then the "its only a replica argument" is true. However, a body over time can change so much that it no longer produces the same ixperiencitness. If a itobody does not produce the same, or closely enough the same ixperiencitness then it is not the same person consciously. Being consciously the same is more important that being bodily the same when consciously the same means the difference between experiencing a consciousness or not experiencing a consciousness. Just because the assumption is that the same body will always produce the same ixperiencitness does not make it so. Especially when the evidence is that if you change the structure and functioning of the same body enough it will have a completely differnt behavior pattern or behaviorpath, say it is a different person, have all the memories, knowledge, skills, and beliefs of a completely different person. The same body person but a different conscious person. After any length of time the structure and functioning can be either changed back or changed to another different conscious person still with the same body

What is the proof or supporting evidence for these statements?:

A body will always produce a consciousness that it will experience and that no other body experiences is assumed as a basic premise even if unknowing so.

A body will always produce a consciousness that it will experience when it is producing a consciousness.

A body will always produce a singular unique ixperiencitness that no other body can ever produce.