Question Lightmap in prefabs ?

Is there any way to store lightmaps with prefabs , I did one solution with shader graph to include lightmap in uv2 and adjust the coordinates with this script

Code (CSharp):

1. Mesh meshToModify = GetComponent<MeshFilter>().sharedMesh;
2. Vector4 lightmapOffsetAndScale = GetComponent<Renderer>().lightmapScaleOffset;
3.  
4. Vector2[] modifiedUV2s = meshToModify.uv2;
5. for (int i = 0; i < meshToModify.uv2.Length; i++)
6. {
7.     modifiedUV2s[i] = new Vector2(meshToModify.uv2[i].x * lightmapOffsetAndScale.x +
8.     lightmapOffsetAndScale.z, meshToModify.uv2[i].y * lightmapOffsetAndScale.y +
9.     lightmapOffsetAndScale.w);
10. }
11. meshToModify.uv2 = modifiedUV2s;

But I am facing another issue after building the uv map returns to default values