Gradebook isn't updating when student retry the SCORM package

[RuiHu]

We have a few courses which are experiencing the same issue:

We use SCORM packages in these courses, published with SCORM 1.2. Each SCORM package contains a quiz and will report a score to the Gradebook. We set the course up to allow students to attempt these SCORM packages unlimited time.

I found yesterday that if a student get a low score on a SCORM package for their first attempt. The grade book will keep the score from the first attempt, even if they try to attempt the SCORM package again and received a higher score. They will see that they got a higher score on the SCORM side, but the Gradebook will not update.

Has anyone else had this problem?

Thanks.

[langlangcat]

What application you used to create these quizzes? Articulate Storyline?

I know it occurs before, supposed to be a server refresh issue, but I don't know if Canvas and Articulate have solved the problem.