Terrain artifacts after binary serialization

Hi,

Im working towards serialising my Terrain, and from what I can gather I have to create a byte[] out of Getheights and then convert it back to Setheights to reimplement.

When testing a basic implementation of that process I run into many artefacts and much unpleasantness.

Im fairly sure its something to do with the way im reimplementing the byte[] into Setheights, as altering the division value changes the amplitude of the distortion, however ive hit a wall with how to resolve the situation.

Any help would be greatly appreciated.

An example of the distortion:

Happy

Not happy.

 using UnityEngine;
 using System.Collections;
 
 public class terrainSTATE : MonoBehaviour
 {
     public bool getdat;
     public bool setdat;
     byte[] Bytes;
 
     void Update ()
     {
         if (getdat) {
             GetData ();
         }
         if (setdat) {
             SetData ();
         }
     }
     
     void GetData ()
     {
         
         TerrainData TD = GetComponent<Terrain> ().terrainData;
         
         float[,] heights = TD.GetHeights (0, 0, 512, 512);
         Bytes = new byte[263169];
         
         int i = 0;
         for (int x = 0; x < 512; ++x) {
             for (int y = 0; y < 512; ++y) {
                 Bytes [i] = (byte)Mathf.Round (Mathf.Lerp (0, 65535, heights [x, y]));
                 i++;
             }
         }
         getdat = !getdat;
     }
     
     void SetData ()
     {
         TerrainData TD = GetComponent<Terrain> ().terrainData;
         int heightmapWidth = TD.heightmapWidth;
         int heightmapHeight = TD.heightmapHeight;
         
         float[,] heightmap = new float[heightmapWidth, heightmapHeight];
         int i = 0;
         for (int x = 0; x < 512; ++x) {
             for (int y = 0; y < 512; ++y) {
                 heightmap [x, y] = Bytes [i] / 512f;
                 i++;
 
             }
         }
         TD.SetHeights (0, 0, heightmap);
         setdat = !setdat;
     }
 }