I hate when that happens. There’s an old Vore video with Rainbow Dash I liked,gone. Alot of futa stuff I like disappeared too. A while ago I was looking all over for a futa video, couldn’t find it. A couple days later someone re-uploaded it,so I downloaded it.
Try looking on Twibooru, quite a lot of deleted stuff from here can be found on there (unfortunately, not everything deleted from here will be on there but it’s worth looking).
As for general stuff lost, I don’t quite know.
Ive checked,it’s not there. I first saw the video on Eka’s,but a ton of stuff seems to have disappeared from there. I know they deleted a bunch of Loli/shota stuff,but this was Dash and adult humans. Or maybe I’m not finding it because it was a Flash video,and my phone isn’t compatible.