Never attempted to do this, but here are some suggestions. Just remember that I have no idea if any of these will work for your specific scenario:
AMO COT: SUPN (Suppress Name)
Add this entry to your Cornet COT and see if it helps. If not, remove it.
AMO COP: NONA (Do not send Name)
Add this entry to your Cornet COP. If it does not work, remove it.
LAST CHOICE:
AMO ZAND: see parameters DISPTGNA and DISPMODE
(Remember that ZAND parameters affect SYSTEM-WIDE settings!!!!)
Please re-post so others can learn from your pain.
Good luck