It appears that there is no solution for my headache but I want to
make sure before giving up on it.

It appears that it's been addressed in 6.5 but not 6.0. I've got some
files with odd characters in the name that get changed by the server
and then a few with Chinese characters that are outright rejected.

(Upgrading is *NOT* an option. Not only is this not worth upgrading
over but management has the utterly invalid notion that the servers
will not be used in less than a year.)