If I have several lines selected, and Duplicate them, both the original and new lines are selected, and if I then attempt to move them up or down, both sets move. This does not occur if I just duplicate the current line. In that case, I can move only the new line up or down.
Is this deliberate? To me, it seems to be more useful if only one set (original or new) are selected when the operation is completed.
Thanks,
Paul