I noticed that the "youthful" state (age 1-20 according to my settings) is never applied and instead being replaced by the "young adult" state.

Also, the "YoungAdultCutoff" seems to not be used. The next cutoff works fine.

If I load a save where duplicants should be in the "dying" state, it reverts them to the "middle aged" state instead, making them immortal.

Can you have a look, Zonkeeh?

Thank you very much for this mod, it's a feature that should be (at least optional) in the base game imo.