1.  You back up the course, including calendar events.  (for example, a quiz with start date and end date)

2. You restore the backup on a new curse

3.  Quiz that has start date and end date, you have to see those dates in the calendar.  You only see the start date, but you don´t see the end date in the calendar.

4. If you consult de table MDL_EVENT, end date doesn´t appear!

5. If you enter the quiz, edit it and record (without having touched any data) then the end date already appears on the calendar