ANGEL Tip of the Day #22 – Don’t delete categories
Continuing with our grading theme, you may be tempted to try and re-order your gradebook by deleting categories. If you have not reassigned the assignments to a new category and you delete the category that they are in, you could lose all of your grades.
To avoid this, just don’t delete categories after you have started entering grades in your gradebook. You can add some, but don’t delete them.