It appears that the legendary drop locations are incorrect. As an example, The Natural Order’s Will comes from the second boss of Nathria but is listed as Torghast, Coldheart Interstitia - Layer 3+. The one that comes from there is Ursoc’s Fury Remembered, which is listed as Crafted - Leatherworking.
I know there are a couple of resto legendaries that are wrong too. I haven’t tested all. Just mine, of course.