At the moment when you want to copy or move items from one list to another, it appears to be the case that the entire list is copied or moved over.
I was hoping that it would be possible to select which items that you want to by ticking the items individually, or a select all option if you still want everything included. I know I could start to narrow down the list by filtering before selecting copy or move, but that would be cumbersome. It would be much easier to just select the entries you want from the start (if you don’t want to copy or move the entire list).
I include a screenshot from IMDB to show you exactly what I mean, and I hope it is not against the rules to do so.