This is a bug that Blizzard is aware of. It does save the views. You just need to login and the do a reloadui to bring them back. For some reason it doesn't do that automatically. I have views 2-4 saved to a custom view. I usually have to do 2 reloadui's for my views to work again across all 4 of my toons.. at most a 3rd time but usually 2 will get the last one to get his saved views right.