Just want to say thanks Laurie. I had a similar problem with Moodle 2.6 and Articulate Studio 13 (Quizmaker quiz within Presenter) and your solution worked for me. It's not perfect as it means not allowing the learner to pick up where they left off but it certainly saved the day for me. Thanks.
Gradebook
SCORM repeat attempts not updating gradebook
Re: SCORM repeat attempts not updating gradebook