Default [Q] Import Birthdays from Facebook to Contacts

I stumbled over this topic when my sister asked me if her cousin was younger or older than her... My contact list couldn't tell me.
I have no clue why the on-board facebook app doesn't sync birthdays of contacts as well.
After some research I found EboBirthday, which does exactly what I want - however, even though it imports all of the birthdays, the export function only exports about 10% of them to my contacts.
I couldn't find any other app for that purpose, all of them just export to calender.

Anyone got an idea? Is this fixed in Froyo or Gingerbread so I just have to wait for a new ROM?