Whoa. No, batch subscription is NOT the same thing as moving a list, and it is not an answer to the question, "How do I move a list to a different server?"
What this page describes is in no way a List Administrator task; everything relevent here can only be done at the command-line with system access, and as such is a Site Administrator task. Yes, Mailman should provide a way for List Admins to do this, but it doesn't. One has to be a Site Admin to move lists from one server to another. Thus this whole page belongs under 4 Site administrator tasks, not here under 3 List administrator tasks.
Probably the entirety of this page should be replaced (here) with, "List administrators cannot move lists. Only Site administrators can move lists."