Based on the FAQ this is not possible at this stage.
"I already have a paid website that I want to move it to my Creative Cloud subscription. How can I do this?
This is not possible. You will have to create a new webBasics temporary website and push it live."
FAQ reference: http://forums.adobe.com/docs/DOC-2153
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1 person found this helpful
Can you not just create the new site in Creative Cloud, delete the files and replace with your current site files? There is no apps or anything its all really basic stuff.
That would be the workaround in this case.