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Hi @bhaus - I believe this is possible if you look in Files. The image used for the course card is likely included within the Course_Image file. When you do your import and select specific content, do you see that as an option?
The only options that appear for the course card/picture are to upload from the computer or upload from Unsplash. There is no option to upload from files. My feature request is with regard to a direct import/1-1 transfer of the entire course.