How New-arrivals ranking works
Ranks by go-live date, newest first — products that went live inside the window lead, and older arrivals are only used to top the collection up.
New arrivals ranks by go-live date, newest first. It also uses the window as a filter: products that went live within the window are the ones that qualify, so the collection refreshes itself as items age out. If fewer products qualify than your Max products cap allows, the app tops the collection up with older arrivals rather than leaving slots empty.
1. The collection, unranked

A normal collection page. The order is whatever the catalog lists — the best performers could be buried on the second row where few shoppers scroll.
2. The ranking engine scores it

The engine sorts by each product’s live date, most-recent first, and puts the ones whose live date falls inside the window on top. There’s no behaviour involved — it’s purely “what’s new” — and a product with no live date on record can’t be ranked at all. Anything outside the window is used only as filler below the genuine new arrivals, so lower your Max products cap if you want the collection to hold nothing but in-window launches.
3. The front row gets discovered

The strongest products now fill the front row — the slots that get the most views and clicks. That’s the payoff: ranking turns your best products into the ones shoppers see first.