Unfortunately, Shopify does not have this function. You will need to use an app for this.
I made a tutorial - https://www.youtube.com/watch?v=K4NOzvmyICU
Shopify merchants are requesting a native menu duplication feature, particularly for seasonal navigation changes like Christmas promotions. The original poster highlighted the problem: they cannot duplicate complex menus for testing before going live, forcing them to either recreate entire menus manually (time-consuming and error-prone) or edit live menus directly without preview capability.
Community Response:
Current Workarounds:
Status: The discussion remains unresolved with no official Shopify response. Users continue advocating for this as a standard platform feature rather than requiring paid apps or technical workarounds.
Unfortunately, Shopify does not have this function. You will need to use an app for this.
I made a tutorial - https://www.youtube.com/watch?v=K4NOzvmyICU