The parameters of a category menu item, like columns, doesn't funtcion

I have a menu and in it a menu item of type (lets say) blog section. The section shows 3 articles. Under unknown conditions although at the beginning everything works well, comes a time when I change parameters on the view of this section and this changes never change the real output by selecting the menu item. It is a very strange behavior.

A workaround for this is to make a copy of the menu item, place the new copy in the same position like the old one and work the parameters there. After verifying that the new button works as expected, you can delete the old one.

Still searching for an answer to that.