On http://sakai-stable.mit.edu:8030, I created a class site
while logged in as jl, added newjl to the site, logged in as newjl, and duplicated the class site.
The duplicated site did not show up as a tab. It was created with the same name as the original site, rather than the one I typed in. Though newjl is shown as the creator of the site, newjl isn't listed as a participant and can't see the tab for tne duplicated site.