Limit single mission years for an SF2 install

[malibu43]

Hey guys. Long time no see. 
 

I’ve just re-installed my big, modded, combined SF2 install that I backed up several years ago, as my 15 yr old son has taken an interest in flying around and shooting at things. 
 

My combined install was always focussed on limiting things up to the early 80’s as that’s where I think this sim is best suited. I noticed that the F-5E he asked me to install (as well as some stock aircraft) allow you to select single mission dates well past that, depending on service years for that particular aircraft.  This gets weird if you elect to fly a mission in the mid 2000’s in the F-5E with no red opposition installed that covers that date range.  
 

Remind me what’s the easiest way to limit the available years for an entire SF2 install?  Is it to go into each terrain and adjust the available years?  Or is there one .ini somewhere that dictates flyable years for the entire install?
 

 

[malibu43]

Interesting... I've found this in options.ini.  But the end year seems to not have any effect...?

 

Quote

[SingleMission]
AircraftType=F-15A
Service=USAF
MissionMap=VIETNAMSEA
MissionType=ESCORT
MissionTime=RANDOM
MissionWeather=RANDOM
AirActivity=RANDOM
AirDefenseActivity=RANDOM
FlyAll=FALSE
LoadMission=FALSE
LoadMissionFilename=C:\Users\gregg_000\Saved Games\ThirdWire\StrikeFighters2\Missions\A-6A Intruder Air Defense Suppression 1.MSN
MissionDate=1995
StartYear=1948
EndYear=1982
EditMission=FALSE