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When I go to Google Maps with that address, I find that it is readily found and is in White Plains and is indeed 'Westchester Park Drive'.
is the URL, for your reference.
I notice that 'Westchester Avenue' is the street that Westchester Park Drive branches off of.
I suspect your map update was not complete enough, or not up-to-date enough, to include the branch street in question.
How 'new' is the new update in question, that has this incomplete data in it?
And, do the 'new' maps actually look like the Google Maps version ? (Cite: URL mentioned above.)