Hello together,
thank all of you for your attention and the hints you gave me. In fact Dons reply solved my problem. Quite stupid of me to overlook the Scenhack utility! Also the other (save/load) solution seems to work.
By the way I already build up a first "come together" scenario from scratch and therfore I was able to proceed in campaign game with my
core forces, but I was annoyed that I could not change the A0 unit in scenario design.
my thanx to all of you,
Engel