Hi. I am not sure if you have found the answer to your question already, but the courses do exist under a new name. They are now labeled as "CS Fundamentals International".
I used Courses 1-4 the last two years, and am now transitioning over to the new courses. What I've found is that Courses B is similar to Course 1, Course C is similar to Course 2, Course D is similar to Course 3, Course E is similar to Course 4, and Course F is an expansion on Course 4. While these are not EXACTLY the same they are fairly similar, particularly in concept.
This year I am experimenting with how I am going to approach these new courses, and here is what I have mapped out for the year. I teach coding to 3rd and 5th grade for the entire year.
Course B - 2*, 4, 6
Course C - all*
*I am using "Building a Foundation" activity with Course B lesson 2 and skipping the first lesson in Course C
Course D - all
Course E - 1, 5-11 (instead of doing the project at the end, I teach them Scratch)
Obviously this is going to be a work in progress, but I hope this helps.