Moving Material and Label Assignments
Material and labels assignments may be moved from one aspect layer to another.
Moving a material or label assignment is performed by selecting the source aspect layer in the Layer drop-down list of the Surface Properties accessed by right-clicking on a surface and selecting Edit properties.
Material and label assignments defined in the selected layer are displayed in the Layer Assignments box. The assignment to be moved must then be selected and the destination aspect layer chosen from the list opened by clicking the Move Assignment button 
.