Issue Summary

Jira currently has no way of exporting the Custom Fields, their values, and their context. 

Using the UI, the admin will have to search through multiple pages of results and no way to copy the values to quickly view the data. 

Suggested Solution

Add a way to export all the Custom Fields, Custom Field Values, and the context.

This will allow admins to quickly browse a list of the Custom Fields to know their context among other information. 

Workaround

Using the UI, you can filter through the search box for issues that have a global context. 

The following PSQL will retrieve the customfield names that are Global. 

Select cfname 
FROM customfield cf 
INNER JOIN configurationcontext cc 
  ON 'customfield_'||cf.id = cc.customfield 
  Where cc.project is null