DirectoriesToAlwaysStage Deprecated?

I’m trying to package json files with my cooked assets.

I found documentation for both DirectoriesToAlwaysStageAsNonUFS and DirectoriesToAlwaysStageAsUFS, but using these variables didn’t actually do anything. Searching through source code, it appears only one of the arrays is used in code at all, and that usage doesn’t actually copy any files anywhere.

I presume these variables have been deprecated? There’s no reference to this deprecation anywhere. Is there any good alternative to this functionality?

If they are no longer used, it would be great to have the variables removed, the documentation updated, and any alternatives suggested somewhere in changenotes.