Importing a course from PowerPoint

Hi,

I have built a course containing mostly quizz questions in PowerPoint which I want to convert to Storyline. Currently I have some 400 slides in the course of which some 350 are questions divided into 20 subtopics, and approx 50 is more administrative slides; as headerslides for the different subtopics, a few help and info pages, the starting page etc. The questions themselves are one question per slide which also includes the answer options, and the answers are revealed as a circle around the correct answer as the user clicks ahead. My question is: Is there a way to transport this over to Storyline in an effective way? If I just import it as a PowerPoint, the slides, including the question as well as the answers plus the indication of what is the answer (revealed as the circle around the correct answer after click) will be treated as any plain slide. However; I would like to have a process where questions are copied more swiftly into Question banks. However, I can not find an easy way to do this.

What I probably therefore will have to do is to make a Question bank per each of the 20 subjects, then copy each and every question per subject over to "new question" in that question bank, then take each of the 4-5 answer options per question and copy each of them into their respective answer box, and then mark which one is the correct answer. At least then the 20(+-)Question banks will fill up. I then make scenes from a main menu which links to the sub topics, which again adresses the different question banks. 

Is this the way to do it or is there a better / more time effective way..? Appreciate any help or hint... :-)