As far as I know...the method works on my system anyway. Once you have it saved safely somewhere, you can always copy and past it back into the FSX files when/if needed.
Thanks, it worked, although it didn't save my mission rewards or certificates, but it saved all my logbook values and the awards associated with that, so it's all good with me.
You copy the stuff from the rewards folder to the new one. Plus, the GrantedRewards Bin file and the GrantedRewardsOld Bin file from the same location as your fsx.cfg as below
C:\Documents and Settings\UserName\Application Data\Microsoft\FSX
That then gives you everything that you had before......