It is now possible to restrict the deletion of issues using field="Delete" in a Project workflow. As with other available restriction options, you can set this for a specific workflow status or all workflow statuses.

Example of Issue Deletion Not Allowed If Issue's Status=Closed

<Workflow initialStatus="Started">
    <Status name="Started">
        <NextStatuses>
            <NextStatus name="Closed"/>
        </NextStatuses>
    </Status>             
    <Status name="Closed"> 
        <Restrictions>
            <Restriction field="Delete" test="false"/>
        </Restrictions>
    </Status>
</Workflow>

The Delete option will be grayed out for users.

ISSUE ID: 14346