Importing many folders and sub-folders containing papers at once, in the same manner they exist

edited January 20, 2024
I have collected a lot of papers during past years whcih I saved them in folders and sub-folders based on different topics and many of them have annotations and informations inside.Now I want to import them exactly the way I have saved them.Is there any way that I can import all of them as they are at once into a library without creating all of those folders and subfloders again?

Τhanks
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