Replace Map Dialog

Material Editor > Go to a map level or a standalone map. > Type button > Material/Map Browser > Choose a compound map.

The Replace Map dialog is displayed when you change a map type to any type of map that can have sub-maps. It gives you the choice of replacing the original ("old") map completely, or using the original map as a sub-map of the new map.

Interface

Discard old map—Discards the old map.

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