ZBrushCentral

Displacement Map generates strange crisp edge along UV seams

Goodmorning,
I’ve sculpt stiches between UVs to simulate the joining of pieces of fabric.
In Zbrush is perfect but when I generate Displacement Map and I check it I see these crisp edges. Of course if I use this displacement map in C4D I have the same risult that Zbrush shows in preview. I tried everything but I can’t get out…

Could you please tell me why and what I have to do for fix it?

Thank you very much for your help!!!