That can happen when you calc them without and elevation.
Try setting your elevations to 0 and automatic when you calc.
Robert
"larryd" wrote in message
news:2849214.1096991911799.JavaMail.jive@jiveforum2.autodesk.com...
> When i export points with no elevation Land assigns -99999 to the
> elevation value. Is there a way this can be modified?