Okay I just deleted one of my Ghosts of Collections Past on my PW2. I got a popup window saying this collection would be deleted from all devices via the Cloud. Sure enough after it was deleted on my PW2 I synced my iPad Kindle app and this Ghost of Collections Past was deleted from there as well. So this is good. But, I would have preferred not to have all the Ghosts of Collections Past suddenly appear on my PW2 to haunt it. Perhaps if we could have chosen which would appear, or if we could manage the Cloud better from computer before we import them, then it would have been much better. as it is, this update imported everything whether we wanted them or not. Bad Amazon, bad...rolled up newspaper in hand...

ETA: Universal editing of Cloud works with PW2 but not Kindle for iOS. Edits on iOS app are just for that app, at least currently. I haven't checked other apps or devices yet. I also noticed that the sorting schemes used by the PW2 and Kindle for iOS are not the same and collections are thus sorted in different orders when sorting by collection name.