check your understanding losing score after resume

Hello! I have searching for the issue caused in Storyline course which is having approximately 210 screens, which have 6 modules (scenes) every scene or module have quiz with a set of 10 questions. After completing the fourth module assessment i have moved to fifth and exit the course. when i have revisited the resume option taking me into the completed fourth quiz instead of module 5. Please suggest how can over come

Thanks