Having bought several different bundles over the years and over time, having stitched the items to my then current gear, you eventually get tired of it and stitch it to new appearance items, losing the old item that you payed for with the bundle. The only way to retrieve the appearance items are through unstitching, but that's if you still have them at all. There should be a way to retrieve any lost or misplaced items that one has bought from bundles (or even card packs), being as we payed for them, it doesn't matter how long ago it was. If unstitching items didn't cost Crowns, I don't think there'd be this problem, but since Crowns are the payment for stitching/unstitching, KI should definitely implement a way to retrieve all account-connected items purchased with bundles/packs.