Add grid value to point using Global Mapper

Use Global Mapper to apply a grid value to a series of points by opening a grid and a point layer in global mapper. Then use
Global Mapper>File>Export Vector Data>Export Simple ASCII Text File
with the export elevation option ticked. Note that it may try to utilise a Z geometry or attribute if it exists before it will use the grid value.
Also, it will transform any line, polygon data into points if using the same method.