I created a tool a little while back that allows you to save or upload routes into the FMGS/MCDU. It backs up the main.mcf and copies out any route and stores it in a folder. If anyone's interested, I can send a link. Its a very simple program, but it's handy on those long hauls. At some point, I'll expand it to give metar reports for arrival/destination, and full SID/STAR info etc
It also allows me to preview my routes that I've built using Navigraph
