The BFAV client has been replaced by the (obsolete) BFAV2 client. The original BFAV server is offline (formerly at sqfixes and sqbugs).
The BFAV package was marked on SqueakMap as obsolete (renamed as "BFAV-old" and commented appropriately) after sqfixes and sqbugs went offline. Since the backend is no longer available, the BFAV-old package has been removed from SqueakMap.
Archeologists interested in the code for the first version of the BFAV can take a look at:
At the moment, the Mantis Server bugtracker is also being investigated as a tracking tool. Although it is primarily being used for bug tracking, and BFAV is primarily being used for fix/enhancement tracking.