How To: Cut polygon features along the boundary of existing polygons
The content in this article pertains to ArcGIS Desktop versions 9.x only. Later versions of ArcGIS may contain different functionality, as well as different names and locations for menus, commands and geoprocessing tools.
Instructions provided describe how to cut polygon features along the boundary of existing polygons.
Select both polygons.
On the Editor toolbar, set the 'target layer' to the layer containing the polygon to be cut.
Set task to Cut Polygon Feature.
Set the snapping environment to the polygon to be cut.
Trace that polygon or right-click and select Replace Sketch. Finish Sketch on the cut polygon.