Im using this version https://model-changing.net/files/file/68-noggit-qt/
I don't understand about change on disk
Other changes are saved, if I place models they get saved.
Models giving me error are inside 1 ADT only.
I move inside the same map, and voilá, objects spawned again. Delete them, save map (all tiles), move again, voilá, spawned again.