Hi @NickAllen ...
@werner_huysman1 has given you an interesting work-around...and is one that I have not tried on my own, but it's worth investigating!
Regarding the IMSCC download you mentioned... when you download that kind of file, you can change the .imscc file extension to .zip, and then you can unzip the file. This is covered in the blue box at the top of this Guide: How do I export a Canvas course? - Canvas Community. You'll see several folders, and some of them will most likely include HTML files that contain the content of your course.
Not sure if this will be of any help, but I wanted to at least provide this information for you. Take care...be well.
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