The ML-0100 design which is the Full Sheet label on 8-1/2″ X 11″ sheets was recently changed. Specifically the number of backing slits was changed to 2 instead of one. So when you are using the labels, you must take off 3 backing panels instead of two. After review, the labels will now be produced once again with one slit running from top to bottom of the page if you hold it in front of you in portrait fashion. Current stock will be exhausted until all of the stock with multiple slits is sold. Please call us to discuss any issues with this product.