Thank you for your question. The folder for your addon domain will be in the public_html folder.
I recommend using FTP to download the addon domain's folder and its contents to your local computer, then using FTP again to upload the files in the folder directly to the new account's public_html directory.
If you have any further questions, feel free to post them below, or contact live Tech Support.
They are available 24/7 via:
Phone: 877-595-4482 x2
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