It is my understanding that the Jiva-Atman is the same as the Atman, it is just this all pervasive consciousness reflected in a body and seemingly trapped in Samsara (correct me if I'm wrong). But I have also heard that it is the Sukshma Sharira that trans-migrates from body to body. Anyone have a simple explanation (from an Advaita Vedantic perspective) as to:
What is the relationship between the Jiva-Atman and Sukshma Sharira and what is it that travels from body to body the Jiva-Atman or the Subtle Body.
Is the Sukshma Sharira/Subtle body subject to the senses, gunas, desires etc but the Jiva-Atman not? If the Jiva is not subject to the desires, why does it travel to the next body?