Resuming a saved flight is super easy and you dont need fsuipc save feature.

Please test as i only have the CS757 installed but it should work for the 767

When in flight ( assuming its all set up correctly with your flight plan etc.. ) make the save and give a name you can remember.

When you want to resume the flight browse to the flight sim save folder for me its

E:\My Documents\Flight Simulator X Files but you will have to find your own save folder

Browse though your saved flights until you find the one you want, there is 3 parts to one save and the one you want ends with FSSAVE double click that and it will load that flight and keep your flight plan, panel set up and IRS data etc.. the only thing it will do is settle the throttles down to what ever they was at when you saved but it only takes a couple of seconds to do that.

Enjoy :)