Exporting issues using Export excel CSV(Current fields) creates duplicate columns when the same custom field name is used in both Company-managed and team-managed projects.

How to Replicate

• Have a customfield in the classic project.
• Use the same name(Filter-duplication) and type. For Eg: Text Field (single line) in classic/Company-managed project and Short Text in Next-Gen/Team-managed project.
• Now create a filter to list issues for the classic project and save it.
• Select the column section and select this custom field Filter-duplication so that it is displayed in the GIN.
• Now export these issues using Export excel CSV(Current fields).
• Even though you have selected just one field, it will show up two columns for the same custom field wherein, one custom field will have the values as provided in the Company-managed project however, the other column will be blank with no values.

Video replication - https://www.screencast.com/t/RcVfrzQfU

Expected result

• Only one column for the custom field(which is present both in Company-managed and team-managed projects) should be visible when we select only that field and use export current fields

Actual result

• Rename the customfield from TMP to fix the export problem.
• Even though we select to export only the selected field, still it creates a duplicate column where one column will hold all the values and the duplicated column will be empty with no values.