I want to update a large number of listings at once, but want to make sure that some listings are not altered.
It is possible to select a large number of rows in the My Inventory view. Right clicking on a channel column will then give options to revise all the listings. It is possible to make a stock item's listings Read Only so that it is not revised. This is done using an extended property on the stock item. For information on how to add extended properties, both singularly and in bulk, please see this guide.
The extended properties need to be in the following format:
Please note that this is only possible on channels that can list through My Inventory.
Stock items that have the appropriate extended property added will not be updated when listings are revised.