TO/GA button - not disengaging AP and not commanding AFCS

[x4569]

When AP /YD are active, for what I understand, pressing the TO/GA button on the power lever should
a) deactivate AP (not YD)
b) AFCS should set ROLL/GA

Also, a second click on the GO AROUND button should trigger action as described in here.

What is also somewhat surprising is wahty they call in the manual the GA/GA mode, I only saw ROLL/GA as for now.

Boy, I cannot tell how this aircraft hit me Pure love!