Nic,
we have Subversion as one of tab in the Jira where we can see the files checked in against that Jira. So may be due to subversion and Jira linked with subversion check in, so this information is establishing in Jira Dashboard in Jira is showing this information.
Regards
Sharad D. Pawar.
Right, that's not data in Jira, it's a cached copy of something else's data. So you can't include it in a Jira export because it's not Jira data.
You might be able to write a scripted field to pull it into Jira properly - that should be exportable.