Blu-rays disappeared from Collection

[DoubleDownAgain]

I was going through my collection, comparing it to what I have elsewhere and noticed the titles listed below as not being part of my collection. They all were at some point but somehow got deleted. Is it possible that somehow they system removed them? My first guess is that I somehow accidentally removed them, as most of them were all in the same range, L through P, but there are plenty of other titles in that same range that were unaffected. So I'm not sure how I could have accidentally done so, and thought maybe they got removed some other way.

Jurassic Park
The Lost Boys
Love Ranch
Magnolia
The Mist
The Monster Squad
Moon
Morning Glory
Near Dark
New in Town
Ocean's Twelve
P.S. I Love You
Patriot Games
Patton
Payback
Pirates of the Caribbean: The Curse of the Black Pearl
Predator 2
Premonition

Anyone else have similar issues? I assumed if so there already would be a post about it, but figured I'd check.