I messaged Ryvita and this is the response: RYVITA Hi , No we haven't changed the recipe, In April 2012 we simply just had the nutritional qualities analysed using more accurate technology. Many thanks Beverley
If they haven't changed the recipe and using them as a healthy B hasn't affected your weight loss then I see no harm in continuing to do so. Obviously if you're gaining or not losing and you don't know why - this could be the answer