So I managed to get both weapons on my DH lvl 111 on a different realm.
I am playing mainly in The Maelstrom and also have there a DH lvl 120, and I also have a guild which gonna raid TW BT, my question is…
Can I raid BT with my 120 DH and still get the achievement for transmog?
Or, Do I have to do it with my 111 DH? (which is in a different realm)
If you got achiev for obtaining the set of warglaives from original BT - it is acc-wide. That means - you can now do tw-BT for another achiev, which grants you DH-exclusive transmog for warglaives.