Problems to generate DTM

Greetings.
I'm having a problem with DTM generation. I have already edited the cloud of points, 
I saved the file, but when I generate the DTM, there are deformations caused by points that I have already deleted. 
I look at the triangular mesh and it looks all normal, but the DTM is incoherent with the mesh I see. What can it be?
3d mesh
DTM
DSM



 

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