Try to find the solution here but can't find a way to solve this problem. I have a high poly model fractured with a voronoi object with a displacement texture on inside faces of debris. Everything looks quite ok in the live viewer but the polygons affected by the displacement map dissapear in final render.
Here is the liveviewer render

And Final Render

I lost all my hairs on that, tried everything from testing different projections to dancing in the rain praying for help, nothing worked... Help would be really appreciated, I mean, champaign bottle and stuff...