What data is stored in the CC Background Job Spool File?

What information is stored in the location referenced in the CC Configuration/Miscellaneous setting of 'Background Job Spool File Location'? Our test and production versions of this system are configured the same, with both pointing to the same location on their respective servers. However the test location shows a virsa/bgJobSpool folder in it containing multiple files while our production system shows this location as empty.

Both versions seem to be working OK. We are running backgrounds jobs in each (risk analysis, management reviews, rule generation, etc.) and seeing results.

We updated to the GRC 5.2 a few months ago and are currently on SP9. This issue came up during a system audit, so we need to come up with an explanation for the differences.

Thanks.