Paint- filling smart material normals

[zFarm]

So I came across something that is a bit frustrating. If I fill an object with a smart material and then fill it with another that has bump in the normal it adds any addition bump to what is already there. I don't see an override for "replace" ie I want it to be smooth again..

 

Then I thought well I'll just clear the whole normal channel.. can't figure out how to do that will fill?  Oh even erase just digs a big hole in my object.

 

Thanks

 

[Carlosan]

Hi

Hope this help

[PolyHertz]

You can also clear the normal channel by right clicking on the paint layer and selecting "Set Height to Zero".