Why is an Pool (type Manual) stateless

Hy,

We have RHEV 3.1

We have implemented an Type autometic pool and an type Manual Pool.

When an user log in to the automatic pool it will start an stateless VM. That can untstand why this is done.

But when an user log in to an manual pool. The VM is set to this user. But the VM will start in an stateless mode. This mean the machine will revert to the preveus state.

So there is an litle diverence between automatic and manual.

Why??????