Yes, I understand that each item in database has its own item. I hoped for some relatively easy workaround.
I am not willing to make up my own guids. I would not risk inventing the same guid as existing item in data independentlyof how low the probability of such event is. The risk of messing up the database and effort to develop a sensible script in this case is not worthy.
Apparently there is not easy work to accomplish that task. I am going to close the thread and raise a feature request. As far as I know we have a bulk actions such as move, delete.
Why not add a clone action for folder or at least a clone bulk action for items in folder ?