So, ZZR is an interesting one. The film company page had a plethora of films credited to it, but it also had a "company" section: all of which linked to different companies. Because Ultrazz wasn't even around for most of these, it can be assumed (and from seeing other people do this, etc. The Heist) that ZZR was not directly involved in most of these productions and they were simply credited. I went to the Skype chat and asked if it should be deleted (as it is not Historically Significant enough) and they said yes.
The case of ZZR is that they were credited as producers even in Ultrazz's absence. The film group was defunct from roughly 2013 to 2015/16. So half of these credits aren't even legitimate. If I were to credit Zilex1000 as a writer on Numbers when he's been gone for a year, it wouldn't be legitimate either.
So, it's been deleted. As far as I know, even after 2015, Ultrazz and his company weren't directly involved in any of the productions they made either. Not to mention they credited themselves as the "founding company of ROBLOXiwood" which is not only biased but plain false. Plenty of us were not a part of ZZR and making films, a prime example being myself with Mike Hike.