The achievements requiring the production of 100 Manuscripts, 50 Tomes and 20 Codexes do not factor in those which were already produced.
Since the production cost of these items increases as more are being produced, I know that it is possible for these items to factor in past production.
The way these achievements are currently set up is highly unfair for those who are already at "limit", i.e. requiring 5 Tomes per Codex and 5 Manuscripts per Tome.
Expected behaviour: Past production is factored in with this achievement.