Which Automation Studio are you using?

Automation Studio 6 is new, https://community.br-automation.com/t/b-r-automation-studio-6-features/2979. A lot of things were removed from it or changed compared to AS4. That is why you have to really follow the instructions on how to migrate your project, and even with this, you might still face issues. With the newer version, most of these problems have been resolved. If you are facing issues, support should help you.