Canvas to Moodle: Restoring IMSCC Backup Fails

Hi everyone! My institution is collaborating with another College here in Alberta to co-develop a program. They are using Canvas and we are using Moodle. They have sent me a few canvas backup files (imscc) that I have been able to successfully restore onto our Moodle (2.7) server. However; I have received two new courses that I cannot backup. I even got new copies of the backup files and cannot successfully restore them.

What happens is:

1. I click restore course
2. I upload the canvas file
3. I click continue
4. I select the category in which this course should live and click continue
5. Absolutely nothing happens...it just spins, and spins, and spins! The systems analyst tells me that this causes the CPU to run at 99%
6. Moodle breaks for me

Any suggestions? Is there any way I can extract the contents of that backup file?

Thanks,
Randah