So I've been downloading a lot of apps recently when I wasn't near my computer, hence unable to install the IPAs into itunes. Now when I sync it looks like it's going to reduce the apps on the phone and so I cancel the sync. How do I stop itunes from doing this? Can I copy the IPAs off the phone using an explorer and stop it from deleting them? or do I need to download all the IPAs again via the computer and stick them in itunes?