We are currently migrating from Central to Resolve, using unattended in both cases.
One difference that we've noticed is that if a computer is rebooted to finish updates and it goes to the black screen that says please wait with spinning logo (either right before the reboot or right after), Central shows the computer as online and you can connect to it remotely to see the screen. Resolve on the other hand shows the computer as offline and remote connection is not available until updates and completely finished and it hits the login screen.
We haven't removed Central yet because of this difference. Many times we've had to use Central to see if a computer is truly offline or it's just at that "please wait installing updates" screen. It would be really nice if Resolve could match Central's behavior in this regard.
