To recombine materials after adding new items, use the Recombine Shape command in the Combining Run Results dialog box.

1. In the Combined navigation tree, click the + sign to show available material shapes.
2. Click the material shape to which you have added items.

   Only the items of the selected shape are shown.

3. Click the items that you want to recombine to select them.

   To select multiple items, hold down Ctrl.

   To select a range of subsequent items, hold down Shift.

4. Click the Combining Run ribbon tab.
5. On the menu, select Recombine Shape.
6. In the first confirmation dialog box, click Yes to recombine the selected shape.
7. In the second confirmation dialog box, click Yes to save the previous combining run or No to recombine materials without saving the combining run.

   By saving the previous combining run, you can compare the differences between the previous combining run and the new one.