I'm using the 2.0.2 version (from developers website) and it works just fine from the address book into Filemaker. In fact on the developers web site it does not claim to go the other way nor is there any button of script that seems to indicate it would go from Filemaker to the address book (there are other tools that claim to do this).

I'm using OS 10.3 and FM 7 on a 800Mhz G4. It took about 7 minutes to import the 400 records in my address book, not zippy but it got all the data in the right places.