Paint over Height Map using a brush with new height info?

[tachikoma100]

Hello,
I am brand new to substance painter so I may be missing something obvious here. Is it possible to add a bottom layer material with Height info (like fabric). Then paint over that height info on a second layer with new height info (like a seam brush) that will replace the height info of the first layer rather than mixing with it? I want the second layers seam brush to mask out the Height info of the first layers fabric, not all of it - just the part where I paint with the seam brush.

Thank you much for any info

[myclay]

change the blend mode of your new height map to replace

[tachikoma100]

Thank you very much for the response

If I,
-open a shirt mesh
-delete existing layer
-drag a fabric material on to the shirt in 3d – it makes a new layer
-add a paint layer on top of the fabric layer, select it and double click on a seam brush from the library
-make sure the drop down just under layers is on Height
-make sure the drop down of the new layer is changed form Linear Add to Replace, and paint with seam brush

This does let me paint with the seam brush height, However as soon as I set the new layer to “replace” it removed ALL of the height information from the fabric layer below it, not just where I'm painting. I don't want to remove the fabric height information from the parts of the shirt that I'm not going to paint over with the seam brush.

I'm I doing things in the right order or does it look like I'm missing a step here?

[myclay]

you could also use BlendMode Normal