Time Tracking Fields not imported correctly by Issues --> Import from CSV

Summary

I imported the attached CSV file (which contains a single issue with a 3hr 30min original estimate) using Issues -> Import Issues from CSV, and the new issue had an original estimate of 3 hours (see screenshot).

I imported the file using [Administration] -> System -> External System Import and the new issue had the correct original estimate of 3 hours 30 minutes.

I assumed the behaviour of both CSV importers would be identical.

Basically there is a difference between the 2 importer and the value of the time fields are not correctly imported by issues > Import from CSV.

Steps to Replicate

1. Create a new Agile project. Make sure that the Time Estimate field is added to the right screen and project.
2. Import using Issues -> Import Issues from CSV. Resulting ticket is refered as Ticket A.
3. Import the file using [Administration] -> System -> External System Import. Resulting ticket is refered as Ticket B.

Expected Result

The Remaining and Original Estimate field is showing different value. Ticket B is showing correct value while Ticket A is showing wrong value.

Using Issue External Import

Using Administrator External System Import

The correct time estimate value is 3 hours and 30 minutes.

Current Result

The Remaining and Original Estimate field is showing same value for both Ticket A and B.

Note

There are no error logs from Jira log during the import for both tickets. I've included test.csv for testing/replication purposes.