function bbp_admin_upgrade_remove_forum_subscriptions_from_usermeta() {

	// Define variables
	$bbp_db    = bbp_db();
	$statement = esc_html__( 'Remove forum subscriptions from usermeta… %s', 'bbpress' );
	$result    = esc_html__( 'No forum subscriptions to remove.',                   'bbpress' );
	$total     = 0;
	$key       = $bbp_db->prefix . '_bbp_forum_subscriptions';

	// Query
	$query     = "SELECT * FROM {$bbp_db->usermeta} WHERE meta_key = %s ORDER BY user_id";
	$prepare   = $bbp_db->prepare( $query, $key );
	$subs      = $bbp_db->get_results( $prepare );

	// Bail if no forum favorites found
	if ( empty( $subs ) || is_wp_error( $subs ) ) {
		return array( 1, sprintf( $statement, $result ) );
	}

	// Delete all user-meta with this key
	delete_metadata( 'user', false, $key, false, true );
	$total = count( $subs );

	// Complete results
	$result = sprintf( _n( 'Complete! %d forum subscription deleted.', 'Complete! %d forum subscriptions deleted.', $total, 'bbpress' ), bbp_number_format( $total ) );

	return array( 0, sprintf( $statement, $result ) );
}