Use Mamaich's utility, extract the maps, edit them in the editor, and put them back.

Could you tell me, when putting them back, should it be in the same DataXX.orc, or can I create my own orc file? Will it take the most recently created version of the map file...? The question arose because there are duplicate files in different Data folders – how does the game not get confused?

And also, maybe someone knows: the parameters of units in the army can be edited in Mamaich's editor. But where are they saved? Which files should be packed into a zip/orc file to insert into the game? I couldn't find them by the creation/update date of the files – only Game.orc updates its date...