My experience was, Lowes did NOT honor the warranty of those items that were "old stock".
They gave me an 800 number to call. It was a bit of an annoying process BUT, once the gal found the specific item (10" long 1/2" extension for sockets that was buggered up) They sent me one without any more issues/questions AND, I didn't have to send the original in.
A takeaway of that for me was, one could (evidently) call and tell them they had a ??? item and they'd send it to you.
They might have changed the process by now, my experience was roughly two years ago. If they keep the same process today, it could be abused.