output filetype of `fanc compare`

[rikrdo89]

I am attempting to generate a ratio of two hic matrices that are in a .mcool format at 5kb resolution. When running the command : fanc compare -S -Z -I MatrixA.mcool::/resolutions/5000 MatrixB::/resolutions/5000 comparisons/AvsB.5kb.cool, the resulting output file does not seem to be a standard cool file that can be read or processed by cooler or other similar tools.

Attempting to get additional information using cooler info comparisons/AvsB.5kb.cool results in the error: KeyError: 'No cooler found at: comparisons/ActDvsWT.5kb.cool.'

And when viewing the contents, the tree structure looks very different than a regular cool file.

$ cooler tree comparisons/ActDvsWT.5kb.cool -L 1 
/
 ├── edges
 ├── expected_values
 ├── mask (1,) [('ix', '<i2'), ('name', 'S50'), ('description', 'S255')]
 ├── meta_information
 └── regions

And :

$cooler tree comparisons/ActDvsWT.5kb.cool -L 2 | head 
 ├── edges
 │   ├── _i_chrpair_0_0
 │   ├── _i_chrpair_0_1
 │   ├── _i_chrpair_0_10
 │   ├── _i_chrpair_0_11
 │   ├── _i_chrpair_0_12
 │   ├── _i_chrpair_0_13
 │   ├── _i_chrpair_0_14

Is the output file a different filetype that needs to be somehow converted to cool?