Ghost points in Mesh from Dense Point Cloud

[Pixel UAV]

Hi All,
I recently produced a Mesh from a Dense Point Cloud.  Before producing this mesh i had deleted parts of the Dense Cloud that wouldn't be required in the mesh.  However when i created the mesh photoscan still created points for the mesh where the  Dense Cloud had been deleted. 
I thought that since i was creating the Mesh from the Dense Point Cloud that i would only get a mesh where there was points.
I have included photos to illustrate the problem

[Alexey Pasumansky]

Hello Pixel UAV,

Additional polygons do appear due to Interpolation settings used in the Build Mesh dialog.