3.0.x]Exception using Wc_order and false when I use wc_get_order · Issue #15616 · woocommerce/woocommerce · GitHub
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wordpress - How to save or update order item meta in woocommerce admin order details page? - Stack Overflow
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php - Filter out unwanted order item meta data from Woocommerce email notifications - Stack Overflow
2.7 RC1] meta data not reloaded after $order->save_meta_data · Issue #13439 · woocommerce/woocommerce · GitHub
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