Hi , I tried registering a new user with special characters in USER_LOGIN_NAME , and the user can successfully login . The data in MySQL is correct , can be selected correctly .

I suspect the importers script has some problem transferring from U_LoginName to USER_LOGIN_NAME , can you check it out ?

As to Display Name , all U_Username to USER_DISPLAY_NAME seems OK , no matter whether it contains special chars .

English is not my native language. I try my best to express my thought precisely. I hope you understand what I mean. If any misunderstanding results from culture gaps, I apologize first.