Hello,
Did you ever found the solution for this problem?
I have got the same, last year my reports were with answers (scorm interactions report) and this year without. So I cannot see directly which questions are too difficult or wrong each time. My report looks the same. I have made questions in Storyline 3.
For now I log in as the student to see what goes wrong, but it is a lot of work. And before it worked well.