Turn the rule on for a collection and sold-out products move to the end; restocked ones return to their place. Other products keep their order from when the rule was turned on; reordering them by hand while it is on is undone at the next update. Updates run after Shopify reports a stock change, plus a daily re-check. Manual collections only: the rule switches them to Manual sorting. Turning it off restores the previous order and sorting; uninstalling leaves the collection in Manual sorting.

• Moves products sold out in every variant to the end of a collection
• Restocked products return to their previous place automatically
• Re-sorts after Shopify reports a stock change, plus a daily re-check
• Turn off to restore the previous product order and sorting
• Activity log of recent reorders and errors