[ic] (su tag) Suppress User Creation While Logged In

[Sam Batschelet]

I am using the standard catalog 5.5.1 and am running into a problem with
interchange creating new users even when the user is logged in.  Without
getting too into the process is there a variable that can be set that will
stop a logged in user from being forced to create a new user on checkout.  I
am trying to deploy email address as login.  I remember a while back Mike
was talking about an su function for this has anyone deployed in on a
checkout level or could give a working example of the su tag.

Thank you
-Sam