Download Collectorz.com Movie Collector from the official site
Release Date: Oct 11, 2017
You can now change the order of box set movies from the details template or Manage Pick List. Click “change order” at the bottom of the list of movies in the template, then click and drag movies around to change the order in the box set.
Add Movies from CLZ Core: expanding a result would sometimes scroll to a different part of the list.
Editing a movie from a box set could mess up the order of the movies in that box set.