php bin/php/ezsubtreecopy.php --src-node-id=1242 --dst-node-id=2 --keep-time=true --keep-creator=true --all-versions=true --login=**** --password=***** --allow-root-user

When I am using the ezsubtreecopy script. In some folders I see a multiple copy of same nodes.

Is this a bug or is it being caused because of some parameter I am passing to it ?