Woocommerce Add New Product Variations – Merge CSV Fie

I’m trying to add new product variations to the exported CSV files(by CSV Import Suite) in order to add new variations automatically. But the added variation doesn’t takes effect.

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As you can see, the last line is the added data. I have to leave ID and menu_order blank because it is a new variation. However, when I import this CSV file by CSV Import Suite. The added variation doesn’t appear on my product page. Can anyone tell me how to create a new product variation like this?