Looked all over but can't find an answer anywhere! I was given an Apple Store gift card for Christmas, which I've now added to Passbook. If I end up with more cards, will they stack up in passbook, I.e. Will the balance increase on one card or will it show as several separate cards? I'm planning on using them to save up for something nice, but if I end up with 30+ separate cards in Passbook I'm not sure if the store would accept them. Whereas if the balance stays on a single card it'd be much easier.