When custom fields with the same name are used in different Team-managed projects, then exporting the file which includes the column for this custom field from the issue search navigator for a particular project, the custom field column will be duplicated and will include the custom fields of the same name from other Team-managed projects.
- Create custom fields with the same name in more than one team-managed project.
- In the advanced issue search include this custom field column and filter for one particular project
- Choose "Export with current fields".
Only the custom field of the select project should be exported in the file.
The custom field columns are duplicated in the exported file which includes the same custom fields from other team-managed projects.
Create a unique custom field name or use a 'Project Suffix' for Team-managed projects.