Map - Replace Materials
Map-Replace Materials is a function on the Place Material wizard which lets you select a material from a library - or another material in your model and 'Map' it to a material in your model - replacing the color, texture and other attributes without changing the name of the current material.
This is valuable if you prefer to have functional material names, like Lumber 4x4, which you use for reporting and want to change the color without changing the material or if you Material Styles - which replaces all materials in a model by name, but needs to preserve the original names.
You bring the Wizard up with the Select and Edit Material icon.
Select Map/Replace tab in the right hand pane.
First select a material using the left and center pane, then select one or materials in the model in the right hand pane.
Click Assign to assign the material in the center pane to the materials in the right hand pane.
Repeat this as often as desired to map all the material you want.
Notice that we are assigning the Red color to the lower cabinet base and doors which are currently white.
When you click Apply all the material assignments will be applied to the model
This makes it easy to make multiple color and texture assignments, and apply them by material name to your model - keeping the existing material names.