There were an unusual (I think) large amount of achievements that became grandfathered (“Legacy”) in the pre-patch 8.0. Previously it has been a few factions, ahead of the curve sort of raid accomplishments, vanilla pvp titles, pvp seasonal accomplishments etc.
This time e.g. two battlegrounds were retired. I had all on Strand of the Ancients, and all but one on Ashran. A huge pile. I got Field Medic on last day before patch. I put some effort into getting that one. Very nice title! I am thinking of making some unhealthy looking mog on my warlock just to have a nice contrast, but have not got that far yet. But I digress… Why they make first aid production be a thing for tailors is very odd. Not that bandages are as important as they used to be. Get off my lawn! Hello Classic servers!
The old Honor/Prestige system also went they way of the dodo. Or at least gene-modified into some other bird. I was quite close to level 22 on last day, so made sure I reached that, since I was not totally convinced the calculation to new system would be flawless. I think it went well. Not that I have tried to check the numbers. I do have a life, I imagine. So for every Prestige level there was a 10 point achievement, so I should have 22 of those as Legacy? Or one that has the sum of all achivements? No. I turns out I have four. Say what?
Why 6, 10 and 14 but not 18? Does not make much sense. However, the top one includes all 22. Or at least list them. This seems like a bug. I thought that grandfathered achievements count into the total (they should) but do they? Hard to know as there are no points shown.
I am not a huge achievement collector, but would be nice if at least the display made sense.