Resume Behavior Work Around Using LearnDash?

Hello, 

Has anyone found a solution utilizing controls in LearnDash to allow for this functionality:

When the learners exit the course without completing it, they can resume where left off OR restart the course. But once the learner already completes the course then exit it, when they access it again, they can only start from the beginning of the course.

I know that I can always force a user to restart a course anytime they exit and reopen, via controls in Storyline 360, but that's not an ideal user experience. We are using xAPI content, not SCORM.