OWA saves KML file as HTML

OWA used to save a KML with 0 KB data in it. To fix it, I changed the Level 2 file types to allow attachments. But , Now OWA only allows me to save a KML file as a HTML file.

Even though I tried to save the file with KML extension (Like "Test.KML"), First few lines are replaced with some HTML script.

Following is the the code in the original file
*******************************
<?xml version= "1.0" encoding= "UTF-8"?>
<kml xmlns="http://earth.google.com/kml/2.0">
<Document>
<Placemark> <name>
*******************************

Below seen is the code from the KML file downloaded from the OWA.

*************************************
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1">

***************************************

What should be changed to fix this problem, so that the KML file doesn't get changed by  OWA.

Thanks in advance for your help.

Regards,
GiriStart Free Trial