In issues which have custom fields that are date fields: do not keep data in those fields while cloning.
You can clear change closure status field after clone action via a post function.
Steps to do this, you will need Jira Suite Utilities plugin:
- Edit the workflow.
- Click on the first step in the workflow.
- In the "Workflow Browser" section click "Create Issue"/"Create" transition.
- Add a post function to "Clear Field Value" for each field you don't want to clone.
- Publish the workflow.
When you do a Clone it will fire the "Create Issue"/"Create" transition on the cloned issue and run the new post functions clearing them out.
Note: The field is also cleared when a new issue is created.