You can delete issues 2 ways in JExcel:
Important to know!
In the earlier versions of JExcel deleting an issue deleted the issue itself and their child-issues (not only sub-tasks).
In the newer versions* of JExcel deleting an issue deletes only the issue itself and their sub-tasks.
*In order for you to have this fix you must upgrade to JExcel PRO v.2.2.2 (Data Center) / JExcel PRO 1.19.6 (server) / JExcel LITE 1.19.6 (server) which we highly recommend!