We are running into a strange phenomenon in a select few of our restored courses. We are migrating from 2.4.6 to 2.6.4 for the upcoming year. In a few classes that have been restored, the cron will log a calendar edit every time it runs. These edits only affect assignments in the class. If I go in and remove the check mark for enabling any time constraint (due date, cut-off date, etc), the cron will no longer update the calendar in that course.
I have tried resetting the course, re-importing the course, and deleting the calendar to no avail. Is there any way to get more detailed logs as to what exactly is being updated in the calendars? A new assignment created in the course is not affected, but assignments that were brought over in an affected class are.