How to copy between domain and subdomain?

Read this How to move a website to a different directory File Management and FTP > Every website is linked to a certain htdocs directory on your account. But sometimes you need to move a website from one htdocs directory to another. This may be necessary if: You are moving to a different domain name (e.g. a free subdomain to a custom domain). You have recreated your domain name and it was assigned to a different directory. Fortunately, there is no need to rebuild your website from scratch. It’s not difficult to move your website from one directory to another. How to move a… especially here How to move a website to a different directory > ## Copying a htdocs directory > > If you want to be absolutely sure your files are safe, or you simply want the files to be on both websites, you can also copy the files of your website. > > ### Note beforehand > > The first thing to be aware of is that FTP does not support copying files. So the only way to “copy” files is to download them from the old location and upload them to the new one.