From what we've read here on the DISboards, the barcode on the DME luggage tags is tied in to your reservation number, and Disney's computer database will have your correct information.
It may be helpful to cross out the "old" resort name and write in CBR, just in case a well-meaning CM thinks your bags got put in the CBR batch by mistake.
DON'T tamper with or cross out the barcode and you'll be fine!