As far as i know you can choose the history with every new game as that is an important selection before you begin the game where you can select a premade history, create your own, or import your save. for the record restarting the client did not solve my importing issue and i made my history to the best of my memory
you can import under Options there is also a chance prior to beginning but it's not finding my save in both circumstances. I'll create a save if i must but i'd rather import my last month of hard work clearing POE