Using the selling app (I have updated), I use copy for items that are alike to save time. I go to update the Title and the Description section and hit save. When you go to publish the new item, it flips back to the old Title and Description of the previous item. Help!
Don't use the App (I've not used it, but others say it is glitchy). I've used the Copy Feature this Season (for a Newbie), and had no trouble (desktop computer, Chrome). Hope this helps.
Always use a browser to do anything important