Hi @rising-reborn-body
Welcome to the LastPass Community.
I'm afraid we do not currently have an automatic option to remove all duplicates, however you may be able to utilize the Security Dashboard to view all the duplicates and delete or update as needed.
Thank you for your reply. I'm showing 1700 passwords, which i believe 600-700 of them are duplicated. Clearing them one by one is not practical. Is there is a way where I can export, clean up, delete all my passwords in LP, then re-import the new data?