Was it “DirectoriesToAlwaysCook” that you added it to?
[/Script/UnrealEd.ProjectPackagingSettings]
+DirectoriesToAlwaysCook=(Path="/Game/Characters/Human_Male")
… like that?
looks like that’s what’s used in my project, and seems to work
i’m pretty sure there’s also a different ini setting for directories to scan but pretty sure AlwaysCook gets included into the package