Duplicate URL from simple menu item - Joomla! Forum - community, help and support

my main menu has item 'about' have linked single article: 'about us' whenever click on 'about' menu item duplicate url created. why?

here 2 urls:

code: select all

index.php?option=com_content&itemid=123&id=25&lang=en&view=article

code: select all

index.php?option=com_content&itemid=123&catid=22&id=25&lang=en&view=article

thanks help.

djako