Season 16 Graveyard of the Pacific are not specials and are season 17, not 16. And the death row isn't an episode but possibly a special replayed for tv.
Season 11 Halloween special deadwood is a special and should be in specials if it isn't in there already. It should be removed from season 11 aswell
Fixed to match TVDB
This has now been completely update on TVDB, season 17 have been removed, the Graveyard of the Pacific are specials and have been removed from season 16 as has the Death Row one as that is just a repeat of two old episodes. I have asked for Trakt to update so hopefully should all be fine soon.