Am confused. You're a prelim intern of some sort, applying to other programs (for > PGY2, in something like Derm, Rads)? If this is the case, no one should have a problem with that, that's totally expected.
Or you're a categorical intern, belonging to a program (such as IM or GS), and you're trying to switch programs (within the same specialty). Someone might balk at that. Of course many other factors come into play.