In undergrad transfering is very common...I mean, I did it twice...but in a masters program it's not as common so they usually don't broadcast it because it's not an option that many care about. I know that both Kellogg and Booth accept transfers. I know this because at the Kellogg info session they said that up to four classes can be transfered in from another (approved) university and I know about University of Chicago because I know someone who transfered in.
Purdue was reference later on in the thread. I went to Purdue for part of my undergrad so I can't really speak for the MBA in particular , but I'd be very surprised if they didn't allow some form of transfer or at the very least a reapply with stealer grades at a B-level B-school counting very highly in your favor.