Mentioned in another post, but I'll put it here, too.
Got Lieutenant Major Pirrell codex while leveling a Merc last night. Checked my older Powertech, and the entry was still missing. Appears they've fixed it for new characters, but not older ones.
Power leveling an agent tonight to test missing entries on that class. With new leveling system and space bar, it's like 90 minutes of work. (Ship, Red Blade, Etc). My main is a Sniper, so I'm curious.