Replace Material Dialog

Material Editor > Type button > Material/Map Browser > Choose a compound material.

The Replace Material dialog is displayed when you change a material type to one of the compound material types. It gives you the choice of replacing the original ("old") material completely, or using the original material as a sub-material of the new material.

Interface

Discard old material—Discards the old material.

Keep old material as sub-material—Retains the old material as a sub-material.