Does anyone know if I have to buy the Grand Company armor again in order to get this achievement? I already had the complete set before the patch, but the achievement didn't trigger after unlocking the new Grand Company category. I tried speaking to the NPC while wearing it as well, but to no avail.

Am I overlooking something?* Is it just a bug? They don't really expect me to spend another 4000 seals on a second set... do they?

*No, my character is not too ugly to make it look good!