Lightroom :: Export Keyword Tag Settings?

I've built up an extensive heirarchial keyword list in one of my catalogs.  I want to export that list to use in other catalogs.  I see how you export the keyword list and I get a text file, however, settings applied to each keyword doesn't seem to get exported (i.e. the settings for "Include on Export", "Export Containing Keywords" and "Export Synonyms").  I spent a lot of time building the list such that only the leaf-level keywords get exported to my image.  However, when I export my keyword list from one catalog and import it into a new catalog, those settings are lost.  Is there a way to export those settings as well?  I could create keyword sets, but that would be another time consuming endeavour.