At least in some instances, it seems that indexing a None value will index it as None: the missing filter does not filter them out.
In [69]: Article.objects.bungie_allcontent().index('sparrho').filter('missing', field='created').sort('created').count()
Out[69]: 0
In [70]: article = Article.objects.bungie_allcontent().index('sparrho').sort('created')[:1:True]
In [71]: article.created is None
Out[71]: True
At least in some instances, it seems that indexing a None value will index it as
None: themissingfilter does not filter them out.