List Bug

This seems to be a return of a bug from a couple years ago. Moving an item from one section to another section in a list creates a duplicate. The item will now have two entries with one in each section. This is making it difficult to add notes to some items on my longer lists because the notes don't copy over to the duplicated item.

Which list did you find this problem on?

I've been using it on one of my larger lists. I'm trying it on the regular version. That list is way too big to use on the beta version since the beta version doesn't have tabbed sections anymore.
www.betalistal.com/list/my-dvd-library-linko
www.betalistal.com/list/my-dvd-library-linko