I migrated a Joomla 1.5 site to Joomla 3 and the sections properly became parent categories. But when I try to create a menu item with that parent category it says
Warning: Save failed with the following error: Another menu item with the same parent has this alias.
However, there is no menu item with that alias.
That parent category has its own article (some text and a few images). How can I make it such that when I click on the menu item for that parent category (which I can't) that "article" appears?