What are the rules for organizing them? I tried to split different parameters of my mod into separate files but it sometimes leads to the changes not applying. Example: I gave all human armors melee attacks by adding to armors "specialWeapon". But I also wanted to tweak some other armor parameters, so I created 2 rul files: one that just adds specialWeapon and contains an "item" section describing that weapon, the other file contains tweaks to other armor parameters. But as soon as I moved these tweaks into a separate file, they stopped affecting the game. Also after creating two files with "item" section, some parameters in one of these files also stopped affecting the game. If I keep all changes pertaining to one section within one file, all the changes are applied.
So, does it mean that one section, such as "armor", "items", or "units" should be only within one file? Or is there a way to organize them in separate files (apart from splitting them into separate mods)?