This alert appears after you choose Current Page, All Pages, Left Page or Right Page from the Page Layout Menu/Redefine Pages submenu. It warns you that any individual edits to the pages will be lost if you proceed.
To view this dialog box, choose Redefine Selected pages from the Redefine Pages submenu of the Page Layout Menu while the Page Layout Tool is selected. Once you click O.K, the alert will appear.
See Also: