How to create a filtered deck based on another deck that only gives new cards? – Scheduling

I have a filtered deck called “N5 Study New” which is based on the “JLPT N5 Tango” sub deck:

Here are the settings for this filtered deck:

It isn’t working how I expected. Because (referring to the original screenshot) it is also giving me cards that are ready to “Learn”, which I believe isn’t the same as New?

EDIT:

Another thing that confuses me is that some of the cards now appear to belong to the new filtered deck… e.g., if I navigate to one of the cards in the browser window (for the original JLPT Tango N5 deck), and I go Cards->Info, I can see it associated with the filtered deck instead:

this is very undesirable