Do you have a link for any of those sections of the files?
This was in the PJ's final report;
Immediately, the question concerning the differentiating value of some haplotypes [haplotype (Greek haploos = single) is a combination of alleles at multiple loci that are transmitted together on the same chromosome] was raised, namely concerning JANE TANNER, page 4175, which was located in a residence in Burgau, which, in our understanding, would not be viable and logical, or to say the least, would be very strange. Therefore, in order to clarify this situation, a clarification was requested from that Institute, pages 4320 and following, which, in its reply, is peremptory in stating that there are haplotypes that are identical among each other, in a percentage that is still significant, pages 4325 to 4328. This means that the hair that was found inside that residence, while possessing the same haplotype as JANE TANNER, belongs to someone else.
https://www.mccannpjfiles.co.uk/PJ/P_J_FINAL_REPORT.htmUnfortunately, the pages quoted are not in the released files, so it's not possible to check what was actually said. Maybe the PJ misunderstood the reply to their question.