The difference here is between body and soul. As far as I'm understanding it. Preserving body meant to transfer both into afterlife, body intact and soul too. The new thesis is, it was just meant to preserve the soul, the body isn't needed in afterlife. That's a big difference in belief and religion.

Pre-Astronautics will be happy to hear about it.

What doesn't make sense to me here is, why take all the organs out if the body doesn't matter, just the spirit?