So you have an iPhone with 60 apps on it, some of which you transferred from your Mac to your iPhone and more of which you downloaded using your phone without the need for the iTunes on the Mac. The apps are also being stored on your Mac. You don't need them on there and want to delete them to free up space. You delete all of the apps from your Mac and next time you plug in your iPhone to your Mac, iTunes offers to transfer your apps from iPhone to Mac (you just deleted them, why would you want them back on there?) & you choose don't transfer, then low and behold, iTunes deletes all of your apps from your iPhone leaving you to have to re-download them all back to your device again. Ridiculous. I don't see myself plugging my phone into my Mac again now that I have iTunes match, PhotoStream and iCloud. That really shouldn't happen.