Hi there, Huaming.
It appears that you have posted the same concern twice, and my colleague has already provided a response. If you haven't seen the response yet, you can visit this link: https://quickbooks.intuit.com/learn-support/en-us/other-questions/when-i-make-a-copy-of-invoice-the-....
If you have further questions or need more assistance, you can reply to this thread, and the Community team is always here to support you.
