The Canine Health Foundation discussion of the original Fanconi test development is at http://www.akcchf.org/research/funded-research/0801.html
The OFA page on the Fanconi Syndrome test is at http://www.offa.org/dnatesting/fanconi.html
The most recent update on Fanconi to BCOA is referenced at the annual meeting powerpoint at http://www.basenji.org/joomla/images/bcoa2010.pdf - note that it references the 2009 research update, the 2010 research update, and that inconsistent results thus far are 4 out of 1089 carriers, which currently is consistent with a high level of accuracy.
I think that should make it VERY clear that Fanconi research has been continuously ongoing.
The current advice from BCOA to puppy buyers, as given in the Basenji Health Pages on the BCOA web site, is as follows:
"Owners should insist that at least one parent of any puppy they purchase be tested “Probable clear” for Fanconi, unless the pup itself has been individually tested and was not tested “Probable Affected.” While not a guarantee of health, studies to date indicate that dogs with one or both parents tested probable clear are very unlikely to develop the disorder."
That is directly from the health pages on the BCOA web site and does accurately reflect the advice given to BCOA by experts. In fact, the statement above is a close paraphrase of the researchers.