I have used vB4 Importer 3.6b2 to import users from a Persian VB4.2 forum. All seems to be fine expect that all non-Latin characters are turned into ???? symbols.
Also, another language specific problem that might be relevant:
I imported this Persian Language pack to the freshly installed XF 1.1.5 but none of the Persian string show up when I set default language to Persian.
I really appreciate your hints to solve these.