I'm performing a large all vs all ANI calculation, and it appears that some results that should be there are missing from the output. For example, when comparing bacteria A vs. bacteria B, the resulting ANI is 87%, but when the converse comparison is made (B vs. A), the result is entirely missing from the output file. Here's a piece of a heatmap illustrating this:

Notice the blue dots (values equal to 0) dispersed asymmetrically in areas of otherwise high ANI