As I mentioned here, my 100% save for TLOU was recently corrupted.
I recollected all 141 items from the game, and these show up in their own menu in the options (141 out of 145 at the time of typing this). However, my statistics menu only acknowledges my 85 Artifacts; the other entries (Comics, Pendants and Manuals) are at 0.
PS. All other stats were also reset, except those in the first section (kills, deaths, damage taken, etc.) which are presumably the stats I had back when the game was in good condition.