The transfer feature is in our near future plan that this features will help you transfer your website from RVsitebuilder 6 to RVsitebuilder 7 in one step.
Now as the feature is not ready yet, so you have to move it manually.
RVsitebuilder 6 and 7 are different platforms that you can see they are separated icons on control panel.
This means, all websites created with RVsitebuilder 6 will not updated to version 7 (on this moment).
If you want to build websites with version 7, you can try creating website with Rvsitebuilder 7 immediately with a subdomain such as test.domainame.com, play and see how it works. This will not be giving any effect on current websites created by version 6 as long as you dont select the same domain name to create site in version 7. (this's why I recommended to test with a subdomain).