BC Migration

$meta_query = array(
	'relation' => 'AND',
	array(
		'key'     => 'meta-article-imported',
		'compare' => 'EXISTS',
	),
	array(
		'key'     => 'meta-bd-featured-video-post',
		'compare' => 'EXISTS',
	),
	array(
		'key'     => 'ndms_bc_migrated',
		'compare' => 'NOT EXISTS',
	),
	array(
		'key'     => 'ndms_video_direct_video_url',
		'compare' => 'NOT EXISTS',
	),
);