If I add the new notes after creating the invoice, will the added new notes be reflected in previous invoices?

[Geetha_N]

No, the added new notes will not be reflected on you’re previous invoices.

If you wish to update the new notes on previous invoices as well, please follow the steps mentioned below:

Step 1: Go to “Sales” and click on “More”.
Next, click on “Edit”.

Scroll down,

Step 2: Click on “Select Notes” and click on “Save”.