dynamic mesh warning: can not locate node with ID ****
 

While fluent update the mesh, the information appears.
Warning: can not locate node with id ****
But the mesh can also be updated and the solution seems to be fine.
So..what's the meaning of the warning information?

Besides, while I use the GRID_MOTION as the dynamic mesh method, the fluent solution and the mesh are fine.
But if I use the GRID_MOTION and the CG_MOTION at the same time(for different and adjacent parts), the cells number increases to an abnormal quantity very soon.
Is there any strategy to improve this problem?

Thank you!
:)