Dynamic Displacement for tracks doesn't appear in the final render? I use the dynamic paint - brush, for the wheel


and the dynamic paint - canvas for the plane with displacement


This is the preview render animation of the tracks

it looks fine, 


and This is the final render in the same frame of the animation.

So why the final render just appears like a flat plane like that? 
I need some help here, thanks
You have Subsurf modifier with different settings for render and viewport:



So, then you hit render new plane generates and dynamic paint refreshes.

Set view subdivisions equal to render subdivisions.