Comment 3 for bug 1361804

Now that I think about it, there are other subfields that would probably need to be preserved. LCSH -- which is used by most Evergreen libraries -- does not include most subdivisions for its subject headings. A cataloger would probably be unhappy if they were to type out:

650 _0 $aHiking $zOregon $zBadger Creek Wilderness $vGuidebooks.

And have it be replaced by the closest authorized heading that is likely to be in their authority file:

650 _0 $aHiking.