If I remember correctly you entered from the soundstage where Narnia is currently. When I did Backstage Pass they had the Home Improvement set and a Blue Screen demonstration. When the tour started you were on a Catwalk type walkway above the Home Improvement set and they did the demonstrations and then you walked out the door and across a walkway outdoors into the Tour Corridor. I remember the signs above the door in the Red/Back stripes with yellow writing (like they use elsewhere in the park) stating the No Cameras / Video Recording Policy. You then entered the corridor and walked thru Stages 3-1 and then exited and entered the Jim Henson Creature Shop. It could have been the reverse of this but thats how I remember it. Somebody correct me if i'm wrong.
LOL, sounds like me. I loved going into those Soundstages

I really wish they would put it to good use. Such an amazing building.