I'm not sure this is the right characterization. The defense was requesting the exact steps the FBI used to come up with a name from the unknown dna left on the sheath using Investigative Genetic Genealogy. The FBI was resisting this discovery request, saying those steps fell under investigative techniques and were not subject to discovery.It is exceedingly troublesome that the prosecution won't turn over the discovery concerning the exact steps it took to retrieve and compare DNA samples.
This is completely different than the retrieval of the dna from the sheath and the match of that sample to BK. The defense hasn't disputed the dna on the sheath matches BK.
IMO