If you are moving/renaming pages, there should be an option to leave a redirect during the moving process. Note that when you use a redirect, there must be no other page content. Also, anything such as categories will be ignored.
I'm a content moderator on that wiki, and I made that page redirect to the target page. Basically, I went to the first link that you have posted, then clicked on the "SML" link where it said "Redirected from "SML"", then edited that page and made it redirect to SML (Channel) instead of SML (4th Channel).
Anyways, next time, don't revive an old thread, and instead, make a new one, or even leave a message on my wall, since I am a content moderator over there.