@Sauroketh,
I have new information about saving the journal:
You do as I describe above, that's right, but addionally if you activate your journal in the Main Menu of TWoS it will automatically use and update the journal when you continue your career, so you don't need to reload the journal every time you load your savegame.
Just save a new journal in-game during a new career, and also activate it in the Main Menu, it will stay activated there until you close it. TWoS will take care of everything else.
I hope this helps you
Good hunting!