HaloMods "Classic" Read-only Archive

what file do i have to use if i want some things i made from example 03a_oldmombasa.map do i have to fix it to all the maps or can i put it in shared.map/single_player_shared.map/mainmenu.map?

example if i made the battle rifle only can shoot 1 bullet each burst. then i want it to every map. should i paste the same thing on every map or can i just take for example single_player_shared.map so it fixes everymap?

Im pretty sure youd have to do it to every map