I'd say nice, but it's only reasonable for them to scan the new one, and let you put the defective one in the new box, and leave with a new monitor, no box. If it involves a MIR they might get weird, just tell them you're not getting the "new" upc.
The sly way is to call them and ask if they'll accept it as a return. If not, go buy another one. Then put the 1st one in the 2nd box and return it.