I want to ask...

I was using K810i previously, and now I want to transfer my contacts, I mean all 400 of them into my new Jet, how do I do it?

Ive tried 'Send all contacts bia bluetooth' and what I got was only 300 contacts were transfered, and all ended up with front and names mixed up and with /1 at the end of their names.

How do I do it nice and clean, all 400 contacts at once?
Like if my contact name in K810i was 'James Bond', how do I maintain it to be 'James Bond' in my JET? Without me needing to rename everything and rechecking if all my contacts are there...