Closed issues not in a release stay in Kanban "Done" column

[Chris Flynn]

Looking for some advice. I'm wondering how you remove issues that are Closed, but not assigned to a fixed version, because they are a duplicate or just won't be fixed, from the Kanban Done column. Once an issue is assigned to a released version they fall out of view from the "Done" column, but these issues really do not belong to a version, because they are not going into production.

Any thoughts or help around best practices for this would be very much appreciated. Thank you!

[Mathiyalagan]

Please make sure your kanban board configured with following sub-filter

fixVersion in unreleasedVersions() OR fixVersion is EMPTY