I just noticed the message "Content import files cannot be downloaded after 500 days" on my Import Content page. I am concerned about this because I have set up two 'Shell/Migration' courses: one for my 16 week Fall/Spring courses, and one for my 6 week Summer courses. I created the first shell (Fall/Spring) 'from scratch'. For the second shell (Summer), I imported the Fall/Spring shell and then made a lot of modifications for the 6 week schedule. Does "Content import files cannot be downloaded after 500 days" mean that I will lose my Summer shell content after 500 days, and that I will need to re-create that Summer course shell again? Thank you.