If I go into an Apple Store, will they trade me a Magic Keyboard if I give them back the Keyboard with Numeric Keypad that came with my iMac? I have active AppleCare on the iMac if that makes a difference. The iMac (21.5" Retina) was purchased a while ago - October, 2015. But the Keyboard with Numeric Keypad has never been used. I know, I've waited a long time since purchase and I should have just ordered the Magic Keyboard but alas, was not thinking.