Question dirt rally 2 hardware_settings_config.xml always reset default

Hi
I am having hard time getting dirt rally 2 to work with my motion simulator. I followed the instructions from this thread https://www.xsimulator.net/community/threads/dirt-rally-2-plugin.13081/page-2 to set the udp enabled in the file C:\Documents\My Games\DiRT Rally 2.0\hardwaresettings\hardware_settings_config.xml

to

<motion_platform>
<dbox enabled="true" />
<udp enabled="true" ip="127.0.0.1" port="4123" ExtraData="3" Delay="1" />
<udp enabled="true" ip="127.0.0.1" port="10001" ExtraData="3" Delay="1" />
<udp enabled="true" ip="127.0.0.1" port="22078" ExtraData="3" Delay="1" />
<fanatec enabled="false" pedalVibrationScale="1.0" wheelVibrationScale="1.0" ledTrueForGearsFalseForSpeed="true" />
</motion_platform>

but when I ran the game there was no motion. I also found that each time the game was run, the config file would reset to

<motion_platform>
<dbox enabled="true" />
<udp enabled="false" extradata="0" ip="127.0.0.1" port="20777" delay="1" />
<custom_udp enabled="false" filename="packet_data.xml" ip="127.0.0.1" port="20777" delay="1" />
<fanatec enabled="true" pedalVibrationScale="1.0" wheelVibrationScale="1.0" ledTrueForGearsFalseForSpeed="true" />
</motion_platform>

would someone know how to fix this problem?

thank you!

You could try changing the config file to read only after changing it. (Right click the config file, properties and click read only under attributes). Worth a shot?

It appears that some other application is preventing the file to be modified. When I changed the file and waited for a few minutes, then the file got changed back to the original again. That is the game didn't even run at all. I wonder if there is a way that can tell me which application was reverting the file??