help in reversing a file to *.xt format please

Could some one help save a file in 2011 into *.xt/parasolid so I can re-open it as an *.xt in 2010 please.

I had some issues with 2011 and some of our server based app's, and had to go back to 2010 for the time being.

File is attached

Any help is appreciated.

Kindest regards

Mark

SolidworksParts And Features