...
Drag the timeline slider to frame 0.
Click on an empty area of the viewport and keep the left mouse button pressed – the animation starts automatically.
When the last frame has been reached release the mouse.
Remove the deformer node from the object. The deformation should now be applied to the object on a vertex-level and work without the deformer.
Open the “RealFlow SD Exporter”, and export the object with the “vertex” option.