Display the Reference Surface of an Associated Surface
Select an associative surface.
In the Properties palette, under Surface Associativity, in the Show Associativity list, click Yes.
Press Esc to clear the selection.
Hover over or select the associative surface object.
The reference surface is highlighted as well as the selected associated surface.
Turn Off Associativity for a Surface Object
Select an associative surface.
In the Properties palette, under Surface Associativity, in the Maintain Associativity list, select None.
The surface associativity is removed, and new surfaces will not be associated with this surface.
Remove Associativity From a Surface
Select an associative surface.
In the Properties palette, under Surface Associativity, in the Maintain Associativity list, select Remove.
The surface becomes a generic surface. You can no longer change surface properties in the Properties palette and the relationship with other objects is lost.