George is right. The devs have made strides in supporting upgraded systems where all sorts of things are off/wonky due to migration not being perfect. That said, most people fail at this process because it’s perhaps beyond their skill level to fix, and when they ask for help on the forums, we have to start from zero with troubleshooting because it could be anything if it’s not obvious, and there have been a lot that haven’t been obvious fixes. I’d always recommend a clean build as George said.