[BETA] The Sims 4 History Challenge (2.0)

So upon reaching a new Era, the previous rules are disregarded in favour of the new Era. Okay, that makes sense. What about the Era goals, though? Do we have to complete them within the Era they're created in (like having kids with different mates in the Prehistoric Era), or can it be completed by anyone who was born in that Era even if it moves onto a new one? (E.g. the Ancestors can complete the 'have kids with five people' goal in the Early Civilisation Era.)