In July the upgrade path was broken as well, they did hotfix that so I figured the bug returned.
I had honestly no idea that they disable upgrading items and delete our collected currency when a new expansion is released, they never did that before!
I was still upgrading my gear in SL long after DF was released, it never was a problem.
We do have quests, achievements that demand that you upgrade gear just like some transmogs, how are people supposed to do this now?
If this truly is working as intended, then WOW, that is such a hit in the belly…