aspiration disappearing when aging up from teen to young adult

When I age my teen sims up to young adults their aspiration does not carry over like it used to. I'm not sure if this is a bug or intentional but I find annoying because if I want their aspiration to stay the same, I either have to remember it or make sure I have that sim selected when the 'select trait' panel pops up so that I can see what their aspiration is and re-pick it.