Reproduction steps :

1. Create a new course in topics course format (we have tried other course formats, and they have the same issue).
2. Add a restriction to section 2 (the problem can be reproduced with any section) 
3. Backup the course
4. Restore the course
5. Note that the restriction is present in the restored course.
6. Create a csv file to generate a new course as a copy of our original course (created in step 1)
7. Navigate to /admin/tool/uploadcourse/index.php
8. Select the csv file from step 6 and submit
9. Click through subsequent screens to launch the course creation
10. Navigate to the created course
11. Observe that the section restriction is not present as it should be

This issue appears to be referenced in ticket https://tracker.moodle.org/browse/MDL-61158

Example csv file :

shortname;fullname;idnumber;category_idnumber;templatecourse
importfromtopics;importfromtopics;importfromtopics;import;topics