My Archaeology is reset

So my DK is my only alchemist. I still don’t have my Vial of Sands mount, so I was going to start to grind for it. When low and behold when I log into him and look at his Archaeology skill it said 1/75. and everything before WoD Races were greyed out. I still have the Wod Races unlocked, including some fragment progress for them.
When I went and looked this issue up. I came across an old EU forum post from 2014! https://eu.battle.net/forums/en/wow/topic/12618122585?page=1 How is this still persistent 4-5 years later?
This is only on my DK that I care about. please fix it since according to the blue posts in the above link you said you did.