Summary

When exporting the results of Issue Navigator into Excel (via the 'Excel (All Fields)' option), custom fields that have no context (Not configured for any context) would be shown in the export as well.

Environment

Tested in JIRA 6.3.12 and 6.4.2

Steps to Reproduce

1. Create a test project (TEST) and a new custom field (Custom1)
2. Configure the context of Custom1 to only show in issues from project TEST
3. Once configured, delete TEST. Custom1 should now show 'Not configured for any context'
4. In the Issue Navigator, perform an export of the search results, using 'Excel (All fields)'

Expected Results

Only fields that are set for Global Context or mapped to the projects returned in the search will be exported

Actual Results

Custom fields that have no context would show up in the export as well

Notes

This only occurs if the context is removed via a deletion of project. I have tested deleting the issue type (which the custom field is mapped to), or deleting the context from the configuration, both of these do not replicate the problem