I am not sure exactly what you are trying to achieve.
If you are trying to strip the /category-name/ from item URLS, you need an SEO/SEF extension.
If on the other hand you want to strip the category from a certain url, let's say the TOS for example, then you need to make a menu item pointing to that K2 item.
JoomlaWorks Support Team
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Please search the forum before posting a new topic :)