Units Unaffected By Terrain Deformation

Level 25
Apr 6, 2010
How do you force a unit to be affected by terrain deformations (both triggered and from spells)? I noticed that some mechanical units aren't affected but organic units are, but I'm not sure that's the actual factor.

Also, when deforming water terrain (having enabled it with the trigger), ships and units on the surface don't float on the ripples created (as if they were anchored to the bottom). Is there a way to force them to follow the deformed water terrain?