It took me over an hour to figure out why my contacts were not showing up in iTunes and the subsequent research ensued. In short, I had to "delete my existing iPhone 4 iCloud account" and establish new iPhone 5S account. Not as plug-and-play as it used to be. This is all following a year of my iPhone 4 operating slow as molasses after I "upgraded" to the lastest iOS. Makes me think twice about updating until hearing all the beta-type issues. What happened to "it just works"? Big machine, move slow.
I work hard all day and hope not to spend my hours in the evening just trying to figure things out. First-world problems I suppose.