Uninstall old version first?

I am currently using the 3.8.65951.477, if I install the latest version the 3.10 plus version do I need to uninstall 3.8.65951.477 version first?

It would be a good idea because there are some substantial changes in the latest versions.

If i remember correctly the Release Notes advise to also not import previous configurations because of these changes.

That’s true. The best way to go is a clean install.