Okay, so for bug reporting
@marc_max , I was editing data the NTSC-J (Japanese) version of New Leaf. The item inventory appears broken. The bells in my pocket were listed as "winning tickets" (lol), and there were other instances i.e. Tom Nook's store had corrupted items, like portraits of villagers for sale, as well as [?] unknown items. I think the items are what is causing the corruption here. Hypothetically speaking, if the items are all jumbled and loading unknown [?] items upon injection, that
could be what's causing the corruption issue. Other than that, saving and exporting lead to errors that may have something to do with corruption as well.