The default policy is to leave the question on the site where it was originally asked, unless it's off-topic there and would be on-topic elsewhere. It's up to the user to select the site where they think their question will fit best, and to tailor the question to that site's audience and topic when asking the question.
In this case, because the question is asking about how to do something with iTunes on a PC, that is interacting with an external device, it's valid and on-topic (see the FAQ). If the question were entirely about the iPad and not the computer that it's interacting with, it would be off-topic and thus migrated to Ask Different.
