Hi, you have to load your current world tour, it's on the bottom left side of the WT menu, then on the next screen you have to click on the upper right side on the female icon; your former back-ups should be there. Hope it helps!
Well, the problem is is that the back-ups are not there. It only says 'Ongeldig!', which means 'Invalid!' in English. So the back-ups are declared invalid after I update my game...