I believe you're talking about the help topic to move a site.
There are two options in the site mover. If you choose to move the site, including its web address to this account - it will MOVE the entire site.
If you select the first option move to http://yoursitename.homestead.com it will only copy the site as the directions indicate. The directions do say that you should choose the first option to copy the site - step 8.
I am reworking the directions to be more clear. Thank you for bringing this to my attention.