Ironically, with uploads to archive.org, you may never see the system-generated files ever again. This can happen if someone adds a "review" to an item, which will then update the XML files and maybe also the .torrent file. Then, those XMLs and that torrent file will disappear forever because you cannot get the older files. (Check /history or whatever, maybe it's logged.) I could share an example of this, but for now, here's a copyright-deleted IA item:
https://archive.org/details/star-vs-the-forces-of-evil-season-one/Star+vs.+the+Forces+of+Evil+(2015)+-+S01E22-E23+-+Interdimensional+Field+Trip+%26+Marco+Grows+a+Beard+(1080p+WEB-DL+x265+RCVR).mkv

>>9850
>Ponibooru.org was very weird and very broken. I suspect someone probably broke something at some point or file corruption might be the cause of that.
It probably wasn't file corruption in the sense that I am thinking of. When data on an HDD gets corrupted it is most likely to destroy part of a large file because large files take up most of its capacity. I have had file corruptions in the past, and it almost always breaks parts of large files, IIRC.