The p_cir_23 patron delete job does not delete patrons who have loan records. (From the cir-23 Help: "Note that a patron that has loans or outstanding ILL requests can not be deleted. The z30_item_pro...The p_cir_23 patron delete job does not delete patrons who have loan records. (From the cir-23 Help: "Note that a patron that has loans or outstanding ILL requests can not be deleted. The z30_item_process_status might, alternatively, be changed to "MI" or "MS", if you don't use "LO". ("LO" has the advantage of indicating that the item did formerly have a patron associated with it.)