So, I recall that locking units as eras change for IR+NR+EOTH is done via .lua scripting ("story scripting" in this case, right?), but I've been poking around for a while in ICW's mod files and I'm not finding the file that controls what units are locked when. Any pointers? (I checked Data\Scripts\Story first, but I've really checked everywhere in \Scripts and \XML\ICW and I haven't found what I'm looking for.)