How to duplicate post/page/portfolio item independently?

Hello!
I have a website with content in three languages. So, for example, when I duplicate a portfolio item in any one language it creates a copy, but linked to other language versions of the duplicated item. Is it possiblle to duplicate just without linking and totally independently? I would like to copy a portfolio item/post/page (with all the content) in one language and then translate it into other two languages as usual. I’ve tried many duplicating plugins, but no results.
I’m using Polylang Pro btw. Thank you.