There was no "automatic" installation of the Avast Secure Browser. Avast gave me the opportunity to download and install it. I did.
The Avast Secure Browser install app asked if I wanted to preserve all of my bookmarks, tabs, passwords, etcetera from SafeZone. I answered, "Yes!" Then, I was given a choice of Express (Recommended) or Custom Install (which had Internet Explorer grayed out). I figured my previous selection was the Express Install and went with that. WRONG!
NONE of my tabs (wish I had saved them to bookmarks!), bookmarks, passwords, etcetera were saved from SafeZone! Instead, only what I had in Internet Explorer, from years ago, were brought in to Avast Secure Browser. BOGUS!
In addition, whereas SafeZone (which was MUCH BETTER than the Avast Secure Browser!) allowed me to login to my Facebook and Twitter accounts and kept my login info for me, the Avast Secure Browser tells me over and over that there is NO SUCH ACCOUNT FOR MY EMAIL ADDRESS in both social networks! However, I am logged into both on my smartphone!!!
There was and is no SafeZone folder in the new Bookmarks bar. "Importing" SafeZone Bookmarks did NOTHING. Since there is no such as an "onboarding screen," there is also no such as "Custom" or "SafeZone" in a dropdown menu.
As far as my experience goes, the Avast Secure Browser is a piece of trash! Even Opera is far better than this. So, I have currently returned to using Firefox.