that could work. but are you sure that's the way it works? apple doesn't hesitate to delete your stuff just like that. An example is the iTunes sync.
I like the way apple syncs our media etc via itunes, but a little more freedom would be nice... For example to copy stuff from iphone to the pc, not just from the pc to the iphone...
Here's another example of permanent deletion: I have several email accounts that Apple's "Mail" pulls into my mailbox. I told Mail to stop bringing email in from one of the accounts. :