Retain original estimate unit when exporting to Excel

I have created a report to show Feature, Feature Estimate (days) and we pull in Time Spent from Jira. When I export the report to Excel, it automatically converted the Feature Estimate units to hours at a predefined conversion rate of 8 hours = 1 day.  I then have to manually reconvert this back to my original units which is really annoying.

I would like the original data/units to be retained upon export without any automated (not required) conversion.