Why oh why was the app repository update function that was a very easy and convenient way to update installed apps on mobile devices made so convoluted and tedious once I upgraded to v10.1.2119.9? Now the only option available to me is Remove for each device? For the love of god STOP removing convenient functions in the name of upgrades.... On top of that, now I have to upgrade apps by clicking on the Distribute button, but it doesn't have the mobile device checked in the Distribute Apps dialog after I checked the box next to the mobile device, so what the hell is the checkbox for next to the device if I have to search for the device in the Distribute Apps dialog and select it again anyway? 

It's unbelievably frustrating.