For me, I see a spike in re-listings [which are different than new listings]. Eg: I usually wait about 90 days if something has not sold, and stop the listing, and the next morning, do the re-listing process. I did the numbers a while back, but usually those re-listings get traction - something like 30% are sold within 24 hours for me.
Stopping the listing and duplicating it, beyond the risk of eBay not being okay with that, won’t trigger the all important push notices and e.mails that eBay sends out when they have customers who have “shown an interest” in an item [that doesn’t have to be a watcher - just can be someone who’s viewed the item]. When ebay sends those notices out, that tends to get the sale for me. Starting a new listing [based on a closed one aka duplicate listing], will not trigger those notifications.
This is why I made the feature request back in August to allow true relistings to be scheduled: Feature Request: Use the scheduler to schedule relistings?
I’m glad you have a way to do it via the duplicate listings; I am just wary of running afoul of eBay rules and having an actual duplicate get listed accidentally.