When creating spot channels in channels for our screen printing uses, there are often times where you will save the file and the spot channels won't get saved. It will save the layers, alpha channels and such but at random it seems will not save the spot channels you have created and often spent hours tweaking before outputting to film. Why on Earth when you save a file would you not want to save EVERY aspect of that file I can't imagine but this bug or feature needs to be addressed. Someone should not have to do "Save As" and check to make sure Spot channels is checked each time you save. It should be assumed in my opinion unless otherwise "unchecked on purpose". To assume that you don't want to save certain things seem counter intuitive. Unless there is something I am just missing that is causing this to happen, PLEASE for the love of God and all things good an decent in the world, fix this! And you might want to look at the excessive hangup when outputting PDFs too. It gets stuck at 10% and sits for ever and then eventually saves it. But no matter what machine I am on at work or home, mac or pc, Adobe Photoshop CC has both of these issues.