When two similar tickets exists, one in Jira Service Desk and one in Jira, the only way to link the two issues in the new Jira view to use "Link external address". When using the old view, you can link Jira tickets directly to Jira Service Desk tickets and vice versa. In the new view, Is there a way to link two tickets between the two platforms directly, similar to how it is done in the old view?