If you have created your items through Vendio for Amazon Handmade then you can bulk edit the descriptions from your Vendio account by going to Items → My Items. Then put a check mark in the box to the left of the items that you want to edit, click the Actions button, and then select Send To → Amazon Handmade. The below process can also be used when sending imported Etsy items to Amazon Handmade.
You should see a “Bulk Edit Description” button near the top left of your list of items. Click that button to start bulk editing your description. You have the option to find a specific string of text in all of your items, or a string of text that starts in one way and ends in another way. Then you can either replace that text with new text that you specify, or you can delete it altogether. When you are done entering the changes click the “Replace All” button.
This is a great way to get your Etsy items in compliance with Amazon rules (if you mention Etsy in your descriptions, for example, then you’ll need to remove that before publishing on Amazon).