Elevation map not updated from both sources

[AdrianaGLapuste]

Hello, I am using 2 LiDAR sensors to create the elevation map. I am encountering the next behavior:
When someone is walking in front and rear point cloud:

1. Sometimes the map is updated and the trace is deleted accordingly
2. Sometimes the map is updated and the trace is deleted accordingly only in the rear data (the front trace is not deleted)
3. Sometimes the map is updated and the trace is deleted accordingly only in the front data (the rear trace is not deleted)

What can be the issue knowing that I am using the same configuration?