Fallout RP: changing invasion date after a game is running?

[Kreshna Aryaguna Nurzaman]

So I'm replaying Fallout again. I have found (and gotten) the Red Ryder LE BB gun, and recruited all the party members: Ian, Dogmeat, Tycho, and Katja. I haven't done much anything else, though - not even the Radscorpion Cave quest. My plan is to start the adventure after forming a proper infantry squad by equipping all party members with Combat Armor (money is not a concern, of course ).

Then I remember; I haven't changed the invasion date in the VAULT13.GAM file. Of course, none of the invasions have happened, because I have probably gone through about ten or twenty days at most. But still, I feel the 90 days invasion schedule for L.A. Boneyard is way too early. After all, the city has the best weapon shop out there, so I won't let the city gone until I tried out every heavy weapons sold by the Gunrunner. So I added 100 days to each town's invasion date except Necropolis.

Will the change affect my saved games? Or should I start over with a new game?

Anyway, my Fallout patches and mods are the following (in order of installation):
(1) Fallout 1.2 patch (already given - mine is the GoG version)
(2) f1child patch
(3) Fallout 1.3.5 patch
(4) Fallout NPC Mod v3.5
(5) Fallout Restoration Project
(6) Fallout Hi-Res patch

 

[NovaRain]

Nope, it won't work for your current saved games.
You can use F12se to modify the GVARs in your saved games.

 

[Kreshna Aryaguna Nurzaman]

I see, thanks! Found them.

Anyway, why is TYCHO_DUDE_LAST_LEVEL 2 instead of 3 like Ian's and Katja's? Just wonder.