Notice Soul walk-ins echo a perspective of interdimensional reality. This is about original Soul departing from its body and being replaced by another Soul with a different reason for incarnating -no need to begin as an infant this round. Sometimes cosmic agreements of exchange exist so an incoming soul can complete unfinished business from other incarnations or manage an ongoing Soul matter on this plane. Souls may know the timing of a walk-in interchange before incarnating, or life conditions shift during an in-body experience to cause a Soul to request an exchange.As walk-ins integrate, they bring their own mental, emotional, spiritual consciousness and evolve the life to resonate with their purpose and intentions. This can involve abrupt changes in relationship, work, lifestyle, habits of its new body. Incarnating into a fully grown body allows the walk-in Soul to bypass trials usually encountered on the path to adulthood. A walk-in also has no childhood conditioning and thus has a spiritual relationship to existence, being tuned into to stream of cosmic consciousness which is more connected to Source. In another view, multiple souls exist in layers within the same being, each having different memories in a symbiont body. (Consider Dax in Deep Space 9).
In essence, one can detect elements of truth in everything and takes stories as pure fiction or as glimpses of parallel vibrational realities. Some visions resonate more than others. Resistance is itself a teacher. Each view can represent a perception or fragment that once integrated, creates a more expanded version of wholeness in a cosmic spectrum.