I am thinking of a case where it is ‘disintegration’ and ‘re-integration’, but making use of some physics that prevent making a copy. For example, let’s say that the mechanism relies on a step for which the ‘no-cloning theorem’ applies. In this hypothetical scenario, a commonly held belief is that the inability to make a copy retains the person’s identity. It is a similar logic to how a person remains who they are from childhood and through adulthood despite the atoms that compose them changing over time.