Done issues reappear on Kanban boards if the Issue Type is changed

Problem Summary

Kanban boards have a configuration to Hide completed issues older than. If you change the Issue Type for an issue that was formerly hidden from the board, it re-appears on the board. This can become a problem when performing post-migration cleanup of migrated Issue Types.

Example Scenario

1. Configure a Kanban project to hide completed issues older than 2 weeks (one week is the lowest available option).
2. Move an issue to "Done" status and wait two weeks.
3. Migrate the project from this cloud site to another cloud site. Notice that the issue is still hidden from the Done column of the Kanban board in the target site as expected.
4. In the target site, move the example issue to a different issue type.
5. Confirm that the issue now reappears in the Done column of the Kanban board.

It seems that the issue's last updated date is being used to calculate whether the issue should appear on the Kanban board, instead of the date of the status change.

Workaround

No workaround identified. The issues should be hidden again after the configured threshold is met again after the issue is updated.