When navigating to Extensions > OpenBay Pro > Amazon > Item links this sections will allow you to see all of your linked items from OpenCart to Amazon.
Add new link
You can link products one by one. Just enter the product name under the product column then enter the item SKU and click add. If successful this will go to the linked item list.
If you click the 'load' button, this will load your listing and allow you to enter multiple SKUs to your products.
You can remove a link by finding the product in the list and then clicking the 'Remove' button.
Amazon stock will be updated from the OpenCart site, so any changes made on OpenCart stock will show on Amazon in a short amount of time.