I added RGB to the Target Channel between Color and Value R.
The purpose of this is because some shaders use RGB collectively for color tint, and alpha for something else, like texture blending. With only the Color channel, it will override the alpha value.
This way also allows you to bake AO with or without lighting, preserving the alpha channel as it is, as alpha isn't used in lighting anyway.
I added RGB to the Target Channel between Color and Value R. The purpose of this is because some shaders use RGB collectively for color tint, and alpha for something else, like texture blending. With only the Color channel, it will override the alpha value.
This way also allows you to bake AO with or without lighting, preserving the alpha channel as it is, as alpha isn't used in lighting anyway.