Updating mod question

We have a mod, say, created on older version (like 1.0.0.4), when choose to play custom game, it show world001.map but map itself isn’t modified, instead modded only player related files like masteries and levels. Does game actually hook up current version of world001.map or uses one the mod was created on?
What I’m generally interested in: should I manually update some mastery mods every time new game version released or it uses current map version by default?

If a mod does not modify and/or include a map, it defaults to the vanilla version, regardless of when the mod was made.

Good to know, thanks.