Sorry can't help you directly there warbo. Do a bluetooth forum search on razr and there's a few relevant hits.

The one-at-a-time thing has me thinking that you are instructing the phone to send only the entry you are on at the time.

There should be a way to send the whole phonebook or folder. So I think it's the way you're sending with the phone, not that the ULF will only take one at a time.