I got a F900BT and a HTC S710 phone. I was able to transfer my phone book without any problems. Like paradroid I also had 2 - 3 times the same name.
To get to the \USER\UserData\PHONEDATA you need to follow the steps on:
http://www.avic411.com/forum/viewtopic.php?t=17542
Then I modified the file "PhoneBook1783b838a1.db" with sqliteexpert and added (H), (M) and (O). You even can delete contacts that you don't want in your F900BT. Keep in mind that when you change contacts in your phone and do a transfer again with your phone; all modification are lost in the db file and F900BT.