James, I have no experience to offer in terms of actually using this feature, but just clarifying a bit. If I read the documentation correctly, it seems if you wish to suppress the behavior of overriding the Ignore pin when the Ignored value is subsequently posted to the entity, you should set the overrideIgnorePin to "false". Interested in hearing the results you're seeing when experimenting with True and False settings.
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Curt Pearlman
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