Resolved Transparent shadows in Shader Graph

Hello,
I am working on an Impostor asset that uses blillboarding. I have everything working, but the shadows the impostor cast are the quad ones, not the texture

Using Shadergraph, is there any way of solving this? I have searched through the forums, and seems to be a tricky question.

 

Solved, kind of. I use the Alpha Clip output to discard all the pixels with alpha == 0
This works for me, since I have no partial transparency in the model.