csv bulk import of addressbook data to e-Newsletter Member

Hi ! I'm Young living in Seoul, Korea.
After I purchased e-Newsletter yeasterday, I'm testing the feature one by one.
I tested "csv import" of addressbook data to build member lists. I uploaded sample csv file but "e-Newsletter" plugin failed to load the value of name field written by Korean Character.
I tested again after I changed the value of name field into English character. It worked fine.
If csv upload doesn't support Korean letters, it would be very hard for me to organize the membership list.
You are highly appreciated to fix this problem.

One More Thing. It would 100 times useful to add mobile phone number when we create member.

Best Regards !