I thing that may be is quite obvious to most, not to me so i spent some time, but may help people while debbuging and testing their events and scenarios:
The events.txt files - and also provinces, religions and other files mentionated at scenario.inc file are read only when you start a new game from the scenairo, not from savefile. So if change anything and want to test it with a previous savegame you must begin a new game and so change to that savefile you want. One alternate way to do this is to append the file to be tested to a previous file that is read (for sample random.txt) which works fine and saves a lot of time (only remember to delete the events when you finished to edit and test and put your events in a definitive file, to prevent double ids errors)
I hope this will be usefull
The events.txt files - and also provinces, religions and other files mentionated at scenario.inc file are read only when you start a new game from the scenairo, not from savefile. So if change anything and want to test it with a previous savegame you must begin a new game and so change to that savefile you want. One alternate way to do this is to append the file to be tested to a previous file that is read (for sample random.txt) which works fine and saves a lot of time (only remember to delete the events when you finished to edit and test and put your events in a definitive file, to prevent double ids errors)
I hope this will be usefull