Adding order item programmatically in selected woocommerce order

Question

I'm trying to add an item into an existing selected woocommerce order programmatically with following piece of code: $order_newitem_id = woocommerce_add_order_item( $order_id, array( 'order_item_name' => $product->get_title(), 'order_item_type' => 'line_item') );

Issue I'm running into is it is inserting a item line in a common table(wp_woocommerce_order_itemmeta) instead of multisite table (wp_2_woocommerce_order_itemmeta).

I'm setting global variable $wpdb set prefix to wp_2_, all other updates, inserts are properly inserted in multisite table except for order item. Not sure what special step I should take care.

Any help is appreciated.