An item in Complex Category may is checked but not selected. In this case it’s not considered as selected and is not deleted. Also you see the following message when try to create a subcategory for this item: “Please select a parent category node”
TitleComplex category item is not deleted when it is checked but not selected
In order to perform actions for the item, it should be selected (highlighted).
Note: If you have one item checked and one item selected (highlighted), the action will be performed on the selected item.