To start, I've tried Shift Clicking every header it's connected to, and even the stormwind one. And also the Illusions one, Enchanting: Tome of Illusions: Azeroth, Tome of Illusions: Azeroth, and each individual one. However, it still shows up as not there.

Any help on this would be grateful!

When you do a /att
You tried doing the Shift+Click on ALL THE THINGS, correct? I know you said various headers, but I'm not sure if they are all tied to the refresh on it.

I'll look at this a bit later tonight when I log on as well and see what is going on. I know Illusions are a pain as when you learn them Blizzard doesn't flag it and it's something you have to forcefully refresh to see.

Okay, that does work, using the ATT one, though I might suggest then removing the shift + click from all the other headers (as they too say they work on refreshing and if not, probably shouldn't say that).

Well they usually work on everything, but Illusions are weird overall. I'll check with @DFortun81 and see if there's a reason why Illusion wouldn't refresh on the other headers. As everything else does so it might be something with Illusions (or possibly Blizzard).