Upgrade to 8.1 or newer when choosing a brand new domain for both clients

Move both Sales web client and Service to a new domain -screenshot

Run SuperOffice SM.win SetupExe.exe installer to upgrade the server and the database.
Run SuperOffice.CustomerService.exe to Install Service and choose to let the installer create the IIS website.
Run SuperOffice Web client Setup.exe to install SuperOffice Sales web client on the newly created Service domain.
Start the Web client and set the new Web Base URL preference in Settings and Maintenance client.
Under Move to new server there are some steps explained to update the database to see the new domain used.
- Stop the current service and add “frozen” to the config file located in the old Service program folder.
- Update database table Config and Registry with the new paths.
- Copy/move attachments/templates and customer center folders from the old installation to the new.
- Run queries to update the absolute that will be found in the database.
- Consider if a redirect should be added so customers using old URLs will be redirected correctly to the new.
- Run upgrade.exe -d newdomain to make sure Service is upgraded as well.