Back up Windows 8 Jump Lists

Back up the files in the following folder. Do this for each user account on the computer.

%appdata%\Microsoft\Windows\Recent\AutomaticDestinations
%appdata%\Microsoft\Windows\Recent\CustomDestinations

This will only preserve the pinned documents/shortcuts for the programs you have pinned to the task bar. You will need to re-pin the programs to the task bar first, for this to work