Ok. Sep 2011 NATOPS, we are on the same page. FO-4. What I am guessing that you are seeing that looks like a connection between the Right Internal Wing Tank and the Right Center Feed Tank is not actually a connection between the two. Look closely. It stops short and has a number 1 next to it which refers to the note "Pressurization, vent, and drains omitted for simplification." Look at the Left Center Feed Tank and you will see it there as well.
Then go to page 2-25, paragraph 2.7.3, and read sentences 3 and 4 like I recommended. It's very clear.