It is a feature setting in the Now Playing List and has been around for some time.
You might have accidentally pushed '2' on the remote while you were in the NPL.
That cycles the group (folder) view.
My other guess is the hard drive that was used to make the replacement you put in your Tivo had that setting already engaged.
You might have accidentally pushed '2' on the remote while you were in the NPL.
That cycles the group (folder) view.
My other guess is the hard drive that was used to make the replacement you put in your Tivo had that setting already engaged.