I don't know how, but Cpanel is always create rules just like that when creating redirect from Cpanel's redirect menu.
The situation is the same way either with old or new hosting account.
Redirect domain/subdomain/folder to another url will causing redirect loop.
So everytime after setuping redirect from Cpanel's menu, I have to replace "." with "/" by my self.
Or I have to PM my temporary root detail to you so you could investigate this?