Favorites and personal pages are not duplicated when you duplicate a page.
To duplicate a page, from the app contents screen, select Options for this page > Duplicate. The duplicated page displays in the same category as the original page.
When you configure notification actions on the duplicated page, your changes do not affect the original page.
Note: You can only duplicate pages that contain up to 5,000 cards. If the page you want to duplicate contains more than 5,000 cards, open your page in designer mode, delete some cards, and try again.