Подскажите, какую таблицу в БД смотреть?
В коде не силён, вот все строки в order.php, содержащие "quantity":
Line 9: $this->db->query("INSERT INTO " . DB_PREFIX . "order_product SET order_id = '" . (int)$order_id . "', product_id = '" . (int)$product['product_id'] . "', name = '" . $this->db->escape($product['name']) . "', model = '" . $this->db->escape($product['model']) . "', quantity = '" . (int)$product['quantity'] . "', price = '" . (float)$product['price'] . "', total = '" . (float)$product['total'] . "', tax = '" . (float)$product['tax'] . "', reward = '" . (int)$product['reward'] . "'");
Line 9: $this->db->query("INSERT INTO " . DB_PREFIX . "order_product SET order_id = '" . (int)$order_id . "', product_id = '" . (int)$product['product_id'] . "', name = '" . $this->db->escape($product['name']) . "', model = '" . $this->db->escape($product['model']) . "', quantity = '" . (int)$product['quantity'] . "', price = '" . (float)$product['price'] . "', total = '" . (float)$product['total'] . "', tax = '" . (float)$product['tax'] . "', reward = '" . (int)$product['reward'] . "'");
Line 18: $this->db->query("INSERT INTO " . DB_PREFIX . "order_download SET order_id = '" . (int)$order_id . "', order_product_id = '" . (int)$order_product_id . "', name = '" . $this->db->escape($download['name']) . "', filename = '" . $this->db->escape($download['filename']) . "', mask = '" . $this->db->escape($download['mask']) . "', remaining = '" . (int)($download['remaining'] * $product['quantity']) . "'");
Line 204: $this->db->query("UPDATE " . DB_PREFIX . "product SET quantity = (quantity - " . (int)$order_product['quantity'] . ") WHERE product_id = '" . (int)$order_product['product_id'] . "' AND subtract = '1'");
Line 204: $this->db->query("UPDATE " . DB_PREFIX . "product SET quantity = (quantity - " . (int)$order_product['quantity'] . ") WHERE product_id = '" . (int)$order_product['product_id'] . "' AND subtract = '1'");
Line 204: $this->db->query("UPDATE " . DB_PREFIX . "product SET quantity = (quantity - " . (int)$order_product['quantity'] . ") WHERE product_id = '" . (int)$order_product['product_id'] . "' AND subtract = '1'");
Line 209: $this->db->query("UPDATE " . DB_PREFIX . "product_option_value SET quantity = (quantity - " . (int)$order_product['quantity'] . ") WHERE product_option_value_id = '" . (int)$option['product_option_value_id'] . "' AND subtract = '1'");
Line 209: $this->db->query("UPDATE " . DB_PREFIX . "product_option_value SET quantity = (quantity - " . (int)$order_product['quantity'] . ") WHERE product_option_value_id = '" . (int)$option['product_option_value_id'] . "' AND subtract = '1'");
Line 209: $this->db->query("UPDATE " . DB_PREFIX . "product_option_value SET quantity = (quantity - " . (int)$order_product['quantity'] . ") WHERE product_option_value_id = '" . (int)$option['product_option_value_id'] . "' AND subtract = '1'");
Line 281: $template->data['text_quantity'] = $language->get('text_new_quantity');
Line 281: $template->data['text_quantity'] = $language->get('text_new_quantity');
Line 406: 'quantity' => $product['quantity'],
Line 406: 'quantity' => $product['quantity'],
Line 408: 'total' => $this->currency->format($product['total'] + ($this->config->get('config_tax') ? ($product['tax'] * $product['quantity']) : 0), $order_info['currency_code'], $order_info['currency_value'])
Line 445: $text .= $product['quantity'] . 'x ' . $product['name'] . ' (' . $product['model'] . ') ' . html_entity_decode($this->currency->format($product['total'] + ($this->config->get('config_tax') ? ($product['tax'] * $product['quantity']) : 0), $order_info['currency_code'], $order_info['currency_value']), ENT_NOQUOTES, 'UTF-8') . "\n";
Line 445: $text .= $product['quantity'] . 'x ' . $product['name'] . ' (' . $product['model'] . ') ' . html_entity_decode($this->currency->format($product['total'] + ($this->config->get('config_tax') ? ($product['tax'] * $product['quantity']) : 0), $order_info['currency_code'], $order_info['currency_value']), ENT_NOQUOTES, 'UTF-8') . "\n";
Line 514: $text .= $product['quantity'] . 'x ' . $product['name'] . ' (' . $product['model'] . ') ' . html_entity_decode($this->currency->format($product['total'] + ($this->config->get('config_tax') ? ($product['tax'] * $product['quantity']) : 0), $order_info['currency_code'], $order_info['currency_value']), ENT_NOQUOTES, 'UTF-8') . "\n";
Line 514: $text .= $product['quantity'] . 'x ' . $product['name'] . ' (' . $product['model'] . ') ' . html_entity_decode($this->currency->format($product['total'] + ($this->config->get('config_tax') ? ($product['tax'] * $product['quantity']) : 0), $order_info['currency_code'], $order_info['currency_value']), ENT_NOQUOTES, 'UTF-8') . "\n";