Is there any update where that will be available? When I go into Lightroom, there is no individual keywords to eliminate. I will try to rebuild the catalog to see if that works.
It will result in the same state. From your sample file, here are the hierarchical keywords:
<lr:hierarchicalSubject>
<rdf:Bag>
<rdf:li>WHAT|Light|city lights</rdf:li>
<rdf:li>WHAT|Light|light</rdf:li>
<rdf:li>WHAT|Light|night</rdf:li>
<rdf:li>WHAT|Structures & Architecture|skyline</rdf:li>
<rdf:li>WHAT|Structures & Architecture|skyscrapers</rdf:li>
<rdf:li>WHAT|Structures & Architecture|street</rdf:li>
<rdf:li>WHERE|NORTH AMERICA|United States|New York State|new york city|manhattan</rdf:li>
<rdf:li>WHERE|NORTH AMERICA|United States|New York State|new york city|manhattan|42 street</rdf:li>
</rdf:Bag>
</lr:hierarchicalSubject>
And here are the flat keywords:
<rdf:Bag>
<rdf:li>42 street</rdf:li>
<rdf:li>Light</rdf:li>
<rdf:li>NORTH AMERICA</rdf:li>
<rdf:li>New York State</rdf:li>
<rdf:li>Structures & Architecture</rdf:li>
<rdf:li>United States</rdf:li>
<rdf:li>WHAT</rdf:li>
<rdf:li>WHERE</rdf:li>
<rdf:li>city lights</rdf:li>
<rdf:li>light</rdf:li>
<rdf:li>manhattan</rdf:li>
<rdf:li>new york city</rdf:li>
<rdf:li>night</rdf:li>
<rdf:li>skyline</rdf:li>
<rdf:li>skyscrapers</rdf:li>
<rdf:li>street</rdf:li>
</rdf:Bag>
You have duplicates and will always have duplicates as long as the metadata is in this state, but there's nothing wrong with that. Lightroom must filter out the flat keywords if they exist in hierarchical keyword paths. PMPlus does not. Having keywords in both places is advantageous when publishing or sharing your images. Not all software/websites recognize hierarchical keywords.
Metadata standards call for apps to put the hierarchical keywords (flattened) into the standard Keywords field.
May I ask why this concerns you?
-Kirk