This DVD, is the Two-Disc Special Edition with a lenticular slipcover and an additional bonus disc included, of course, has the same UPC code as the Two-Disc Special Edition. With the additional content and different cover, is there any way of including this in the database as a separate entity? I know Ken has made special provision for a similar case at least once.

I bought this as well. I was going to just change the UPC on the existing profile for the Harry Potter 2-Disc one in the database, and discovered that there wasn't a different UPC. I never got around to working on the profile though. Disc ID is probably the only way to submit it. Since the only real change to the profile is an extra disc and different cover, you could always just add the existing profile by UPC and change the info locally and lock just the sections that are different, like the Cover images and disc IDs. I was thinking about doing that myself.

What I do in these situations is to make the changes that apply to my copy, lock them and just never contribute *those* changes.  That way I can download the changes that do apply (cast, crew, etc.), but not extra disc ids, scans (if applicable), etc.