Hi, I am pretty sure that if you delete within the saved folder they are gone . . .
I tend to use a folder as a pending deletion 'bin' much like the MS recycle bin to reduce over eager finger trouble these days
Deleting from the closed listing folders does not delete the original listings as it is only a reference to what was on eBay.
Cancelling within the scheduled listing folders only cancels the action of a scheduling a listing, it does not delete the listing.
But if you deleted a saved listing that was scheduled I believe it warns you, similarly if you modify a scheduled listing, but this depends on all parts of the system being in synch with each other and if you make a compromising action too soon it may not be able to warn you.
Does that help or have I just
?