Thank you for such a thorough explanation..  I recently went through a Past Life Regression and was adamant that at 2 years old my current soul came into my body.  My hynotherapist had never heard of this, and was quite stumped.  I was adamant I was a different soul until I was two years old.  This explains it all.  Perhaps I will get a chance to really explore and understand the reason for this exchange of souls.