1st I load track from GT31 to my GPSResults
Then: FILE>GoogleEarth Overlay
When I fix the desired zoom and angle in GE I capture the screen (I use fastone screen capture)
Back in GPS Results in track field, rightclick: Load background image
Then I adjust zoom to tracks be same size, press CTRL+F to merge tracks and background, adjust zoom again to all fit in window
then I remove check from Display>Tracks (just to have one tracks not 2 of them)
After that again screen capture of final GPSR image and post to GTC
I never use KA72, I allways out 6 parameters by hand from GPSR on 3 decimals