How do we make staking active on the new wallet?
Encrypt the wallet first. After it closes open it again, go to settings→unlock wallet. Unlock it with the passphrase you used for the encryption. Staking should activate automatically (you can check by hovering your mouse cursor over the arrow icon in the bottom right corner. It should also turn green when staking activates).
The current version of the wallet will completely unlock by default when you use your password to unlock it.