Understood!Well, the first map was actually 2.5 miles of terrain that I stretched to just get a proof of concept.
When Saving, check the file size, that will usually let me know if something is wrong, or not saved correctly.The second one is 5 miles of terrain. I am not sure what I did different.
You can find the correct file size by comparing it with other height maps that are the same size, located in different maps.
davinci