Hi,  You can use below command to replace xxxx with yyyy  symaccess -sid 1234 -wwn xxxx replace -new_wwn yyyy  
Does this command to replace an HBA in a initiator group look correct?  The CLI reference manual is not very clear to me. Also, this doesn't remap the devices, keeps same FA postions and H-LUNs, correct?   symaccess -sid XXXX -name init_grp_name -type initiator replace -wwn -new_wwn    Thanks!
Command to replace HBA in initiator group