Fix item data

includes/class-wc-checkout.php

@@ -231,7 +231,7 @@ public function create_order() {
 			foreach ( WC()->cart->get_cart() as $cart_item_key => $values ) {
 				$product = $values['data'];
 				$item    = new WC_Order_Item_Product( array(
-					'qty'          => $values['quantity'],
+					'quantity'     => $values['quantity'],
 					'name'         => $product ? $product->get_title() : '',
 					'tax_class'    => $product ? $product->get_tax_class() : '',
 					'product_id'   => $product ? $product->get_id() : '',

includes/class-wc-order-item-fee.php

@@ -108,6 +108,14 @@ public function save() {
 		return $this->get_id();
 	}
 
+	/**
+	 * Internal meta keys we don't want exposed as part of meta_data.
+	 * @return array()
+	 */
+	protected function get_internal_meta_keys() {
+		return array( '_tax_class', '_tax_status', '_line_subtotal', '_line_subtotal_tax', '_line_total', '_line_tax', '_line_tax_data' );
+	}
+
 	/*
 	|--------------------------------------------------------------------------
 	| Setters

includes/class-wc-order-item-product.php

@@ -222,25 +222,6 @@ public function set_backorder_meta() {
 		}
 	}
 
-	/**
-	 * Get all class data in array format.
-	 * @since 2.7.0
-	 * @return array
-	 */
-	public function get_data() {
-		return array_merge(
-			$this->_data,
-			array(
-				// Return SKU for convenience
-				'sku'       => $this->get_product() ? $this->get_product()->get_sku(): null,
-
-				// Return item price for convenience
-				'price'     => $this->get_total() / max( 1, $this->get_quantity() ),
-				'meta_data' => $this->get_meta_data(),
-			)
-		);
-	}
-
 	/*
 	|--------------------------------------------------------------------------
 	| Setters