How to DrawMaterialToRenderTarget with Alpha.

Hi I wanted to bake texture from material using
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but it renders without alpha chanel. In my material I’m using Surface | Opaque | DefaultLit material and I’m plugging what I want to render to emissive color. All the time alpha chanel is just at 0. Is there any way to make it render witch custom alpha chanel?

Nevermind I made material blend mode translocent and plugged outup from emissive color to opacity. I’ve tried this before and I think the reason why this haven’t worked before is that the render target wasn’t reloaded (RightClick on render target -> Asset actions -> Reload).
EDIT: And the maks somewhy is inverted so I have to use 1-x before opacity. And I’m using 0 in emissive color(Don’t know if colors work properly).