What happened to the ability to hide attachments in KB articles?

What happened to the ability to hide attachments in KB articles?

I used to be able to hide attachments in KB articles but i can't find that option in the new interface. 
This was very useful as I use a KB article to keep the latest drivers for our products.  This way when customers access the article they only see the latest versions of the driver.
How can i do this in the new interface?