In the grade file, grade data for each shot is linked to the shot. You can edit the cut, for example, reorder the shots or add cross-fades, and the grade will not be affected. The grade data for a particular shot will still be linked to it after editing.
Save the grade to save all modifications made to your footage in Lustre. When you save the grade, any modifications made to the associated cut are saved to a grade metadata file. This file is named grdxx.grade, where xx is the number of the grade file. In addition, any changes made in the Dust menu are saved to a dust metadata file and changes made to the cut (such as trims or dissolves) are saved to the cut metadata file when the grade is saved.
Usually, you save the grade for an entire cut. In some circumstances, it can also be useful to save the grade of an individual shot. See Saving and Loading Marry Grades.