We don't have any way of mass-editing existing products. We can only mass-import new products from a CSV file, so if you'd be willing to just delete all your current products and re-import them all from scratch, we could do that. As long as you keep all the same Item Numbers, your existing button codes should continue working as-is. We can see if Development could provide a CSV file export of your current products, but that may take a day or two. If you want to pursue this approach, please email our Support team, as we will need to provide you with a template file for the import, obtain your E-junkie password, etc.:
https://www.e-junkie.com/ej/contact.php
