I posted re this a few weeks ago but notice this is still not working sometimes and I have also found many of my listings even though I have ticked the selected boxes when it comes up "List Faster" it is not changing the specifics to what I am ticking.
The examples are I have the same buttons in different colours so list the first item say blue buttons. For the second item say pink buttons, I click sell similar, change the word blue in the listing title to pink then up pops the "list faster" boxes where it automatically suggests pink so I tick that. I can see when I scroll down the colour has changed to pink. I list the item but when I go back to check the colour is still blue.
So, if you also use this, check your listings. It works fine if you don't bother ticking the list faster boxes.