Saving progress on a current flight

Good Morning, this question is probably asked and answered but being new to this I maybe dont even know the proper search terms. I want to create a route to fly and perhaps build on it as time goes along and skills increase. I understand how to do that but what I wonder about is if I get called away halfway between departure and destination can I save my progress and pick up where I left off?

Take a look at the thread I created a week or so ago on this.

Worked fine for me with the “gotchas” I listed

Keep in mind this is PC, not sure if XBOX follows the same as above.