Fix Parcel Remainder

Idea created by fconkling on Mar 25, 2015

    Modify the behaviour of the Parcel Remainder tool so that it will retain the polygon types for all polygons it "clips" during its operation.  Currently, all polygons that are clipped are assigned the polygon type set in the template instead of retaining their original polygon type.

    Plese modify the tool providing an option to retain the existing polygon types when performing the Parcel Remainder if they are differing polygon types.

    This is especially important when performing a replat of an existing subdivision and one wishes to "clear out" everything underneath that is impacted by the replat of the subdivision.  

    Currently, one either unchecks the other polygon types, performs the parcel remainder and repeats by setting the template each time.