please suggest if i need to import or export to modify server name in UDT/IDT

i need to update new message server name  in UDT/IDT.

when i go to tools-> connections and try to change server name  UDT tool is closing

when i go to parameters-edit connections and try to change server name  UDT tool is closing

please suggest if i need to import or export to modify server name in UDT/IDT

Regards,

nz