Version 11 have no website keywords anymore 
Auteur : Clement V.
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Hello Claudio
With version 10 is everything good now. But there is another problem with version 11. Why do you have an important part removed. We can no longer enter our keywords in general settings on our website. That is important for searches on google.
Best Regards,
Clement
Posté le
Clement,
The newer way of handling this is to make the keywords for every page separatly.
You can still set them but now available for every page, this gives an even better more secure result.
Set them in the properties of every page in the sitemap.
Here is a little more detailed info...
http://answers.websitex5.com/post/102431
BR André