When using Kaltura Media Assignment, open and due dates do not roll correctly when restoring a course. The video explains the issue.
Dates do not roll correctly on copy.
Have a master course with a start date of, lets say 3 september 2015. and set the date in a KMA for the availability on the same day and the due date a week later -9 september 2015.
Backup the course and restore it in a new course in Moodle with a start date of 1 January 2023. You will expect that the available from date in the KMA will be 1 January 2023 and the due date will be one week later, 8 January 2023. But they keep the original dates instead of rolling with the new start date. This rolling is something that happens with every other activity like forums, assignments, workshops, quizzes. It is not happening for Kaltura.

Something similar to what happened with Questionnaire and it was patched:
https://tracker.moodle.org/browse/CONTRIB-6800