Not sure if this has been covered or if it is even really a thing. When I get updates on my grimoire progress for kills as Hunter/Warlock/Titan I get a comment as "2750/5000 Hunters Killed in Crucible" but I just killed a Titan as a Hunter. I think the grimoire is tell me I got kills as Hunter/Warlock/Titan when it means I killed Hunter/Warlock/Titan and vice versa and honestly I only noticed it because DestinyTracker.com has the nifty reports but maybe they are reading the data wrong.