Aura of Calm Emotions, when save?

[Psionicist]

My character has the Vow of Peace feat from the BoED. I have played him for a while but never actually used the benefits from the feats. That is usually a pretty bad idea.
Now, with Vow of Peace you have a 20 feet aura of Calm Emotion. Here's the description:

First, you are constantly surrounded by a calming aura to a
radius of 20 feet. Creatures within the aura must make a suc-
cessfull Will save (DC 10 + one-half your character level + your
Cha modifier) or be affacted as by the calm emotions spell. Crea-
tures who leave the aura and reenter it recieve new saving
throws. A creature that makes a successful saving throw and
remains in the aura is unaffected until it leaves the aura and
reenters. The aura is a mind-affecting, supernatural compulsion.

I have a question:

"Creatures who leave the aura and reenter it recieve new saving
throws. ". What if my character walks backwards (so the enemy is outside the aura) and then moves towards the enemy? New save or not?

Thanks!