Infant (Lap) Upgrade
 

I am about to purchase a B class for eva airlines , for myself with an infant (3 months old)-one paid seat. I am planning on upgrading the flight to RL class using united miles. Does anyone have experience doing this on eva airlines, that is, is it even permitted? If it is, on the star alliance upgrade, do I even list the infants name as a second traveler (to be upgraded)? Or will he automatically be upgraded with me (into the same seat). Thanks