You need to structure your comps accordingly - create the key in a pre-comp, apply the others in the parent comp. And most keying effects don't deal with already existing Alpha, so you need to fill in the voids with a suitable color or, which might actually be smarter, combine your different keying pre-comps with matte modes, i.e. key out the BG and the other colors in separate comps, then subtract B from A in yet another comp.
Thank you for answer. This is probably the explanation :
"And most keying effects don't deal with already existing Alpha"
And even if I would use a pre-comp, I still had the same problem. But I found a very simple fix. It seems that if I would use multiple keying effects, it matters the order of the effects.
Just by simple dragging a key effect on top or bottom of my second key effect, the result will be suddenly correct.
It's still not clear. I made 2 pictures with a schematic representation. These are just examples. With the adjustment layer 2 - I get that picture with transparency and I would like to add that to adjustment layer 1 image. Basically the adjustment layer 1 should be the background.
this is what I want :
and this is what I get :
Could you upload a simple example?
Your adjustment layers need to be in pre-comps. An adjustment layer effects all layers below it.
Does that make sense?
Thank you for answers. I found again a workaround with trackMat.
I was trying to avoid using too many pre-comps.
Perhaps when Adobe will add a complete schematic view (with nodes) a la Combustion and Nuke - everything will be finally clear. Hopefully an implementation where the default classic work mode will coexist with the schematic view mode.