the issue is the raw data is encoded and there are only a few people who have worked out how its encoded, sadly ive not seen anyone share how to decode the gsb files. there is a bit of info out there for the older glb format, there is still a glb version of the file thats sometime there... other times not, but sadly it appears since the where using glb originally the file structure, columns changed or the key and ive only ever managed to get a half garbled export to work on the older glb format.
if novaworld.cc is truly gone, it would be great if they could at least share their code or the info of how to dump the data from the gsb files.