Test page content to existing page

I’m redesigning a page in a test area. How do I move that page when I’m done to replace the old page? 

 

 

 First, when in the new design, click on the three dots in the upper right of screen 

 Click the Code editor in the dropdown to switch to code view 

 Copy all the code (Ctrl A and Ctrl C) 

 Go to the page that you will update 

 If you want to keep a copy of the old look, then click duplicate 

 Now on the page that you will update, click to edit 

 If still in the Code editor mode, just hit Ctrl A, then Ctrl V 

 Go back to Visual editor (back in the three dots dropdown) mode and check your work 

 If all is okay, then save and the page will be updated