When you have many collections that require scrolling it is very difficult to move an item to a new collection or to copy it to the new collection. You would expect that a simply copy and paste would work, but for some reason, it is not implemented. It seems that this would be not difficult to do. You could either cut/paste to move the item or copy/paste to put the item into another collection. Hopefully, you could select multiple items to cut or copy/paste them. It is rather incomprehensible why this has not been implemented yet, as it is the biggest issue in working with large collections. Is this on a future roadmap? If not, it really should be.