Menu Structure Challenges Pages/Categories

Greetings,

I am trying to combine within a menu “Pages” together with “Categories”

I go to the “Pages” to the right, select the pages and add to menu.

Likewise I do the same for the “Categories”.

I then adjust the menu by dragging items into the proper position and click “Save Menu”

I check on the pages and there is no change.

I come back to the “Menus” and, well… the menu that I created is partial, but not containing all the items of which I earlier completed.

Any Ideas, Anyone?

Deird