I am working on a new calendar including historically correct week changes for each major tournament. Even though most tournaments are displayed correctly at the "planning" screen in career mode, others don't! So far I haven't been able to detect any rule for it. In some occasion it will even happen that in a particular year the tournament will be shown correctly and in others years not.
Any ideas? I will upload the .ini-file, too. I stopped testing the results after the Acapulco tournament so it isn't done.