I've been a member of merch by amazon for a while now and have only ever uploaded authentic designs. With much trial and error in recent months I began to have some success.
However since the switch over to Port & Company many of my designs are ruined. The positioning is far too low and the shirts now have the designs towards the center of the shirt, especially with Youth shirts and womens too (mens shirt designs inflate too big in comparison too). This means I'm going to have to re-upload my designs to alter the positioning and lose all of my sales history, all of my reviews, all of my rankings and lose a huge amount of sales. This means you'll lose a huge amount of sales too from the combined losses.
Is there any way you can help with this? Could you adjust the positioning on your end to the same positioning the Anvil shirts had? Or at least provide us with links to reupload designs to our existing listings? Something?