I have confirmed my settings with the manual and still it fails to resolve. I have purged all previous URLs and checked they were removed from the MySQL database after setting were made.
So with no URLs in the table and these settings it fails, however the manual as descirbed below suggest that the duplicate URL should go away. Have I read / set it wrong ?
Exclude source info (Itemid) = Yes
Reappend source (Itemid) = No
Append non-SEF variables to URL = Yes
4.2. PREVENTING DUPLICATES
If you are facing duplicate content items links e.g.
yoursite.you/article.html,
yoursite.you/article-2.html, etc. that lead to the same content, this is most probably caused
by so called “Itemid†variable (although there may be other reasons also).
The Itemid is internal Joomla! variable used to identify the source of a URL link. E.g. main menu
or sub menu item that your visitor used to get to a certain content. According to this variable,
different Joomla! configurations are applied - e.g. what template will be used or what modules
will be visible, etc.
Since JoomSEF 1.4.0, several new configuration options are provided in “Advanced
configuration†section. The option “Exclude source info†may be used to exclude the Itemid
variable from the URL and thus eliminate the duplicates caused by it. However, ignoring it
completely may lead to unwanted Joomla! functionality, like not swithing the templates as desired
or so. Whether this will be a problem for you or not depends mainly on the way how your site is
designed and how complicated it is. If you need to fix this, the Itemid should be “reappended†o
the SEF URL as an extra part using the option “Reappend