I have a rather long playlist, over 1000 songs. When I try to create a copy for backup by adding to a new playlist, I am sometimes told that it can not be done at this time; at other times, nothing happens. If I try to add it to an existing playlist, nothing appears to happen, but when I edit the destination playlist, it appears that all of the songs are there, but not in the original order. (I have manually sorted it) The song count shown doesn't change.  ... View more